Smoking in China: findings of the 1996 National Prevalence Survey

Prevalence and risk factors for anaemia in pregnant women: a population-based prospective cohort study in China

Maternal anaemia is a common pregnancy complication in developing countries; however, its epidemiology remains largely unexplored in China. This study was designed to explore the epidemiology and risk factors of anaemia during pregnancy. A prospective cohort study was conducted, using data from a population-based pregnancy-monitoring system in 13 counties in East China (1993-96). Women who delivered singleton infants at 20-44 weeks with at least one haemoglobin assessment during pregnancy were included (n = 164 667). The prevalence of anaemia (haemoglobin < 10 g/dL) during pregnancy as well as in each trimester was estimated. Multivariable log-binomial regression models were used to evaluate risk factors. The overall prevalence of anaemia in pregnancy was 32.6%, with substantial variations across trimesters (11.2%, 20.1% and 26.2% in the 1st, 2nd and 3rd trimesters respectively). Risk factors for anaemia included older maternal age, education below junior high school (prevalence rate ratio [RR] 1.10, 95% confidence interval [CI] 1.08, 1.12), farming occupation (1.05, 95% CI 1.03, 1.06), and mild pregnancy-induced hypertension (PIH) (RR 1.09, 95% CI 1.05, 1.13) and severe PIH (RR 1.13, 95% CI 1.06, 1.19). Peri-conception folic acid use was associated with a reduced risk for anaemia in the 1st trimester (RR 0.75, 95% CI 0.72, 0.78). Initiating prenatal care after the 1st trimester was associated with increased risk of anaemia in the 2nd and 3rd trimesters. Our study found anaemia during pregnancy is highly prevalent in this indigenous Chinese population. The risk increases with the severity of hypertensive disorders. Folic acid supplementation during the peri-conception period is associated with reduced risk of 1st trimester anaemia.

Smoking and the risk of upper aero digestive tract cancers for men and women in the Asia-Pacific region

Although smoking is an established causal factor for upper aero digestive tract cancer (UADTC), most of the evidence originates from the West. Thus, we analysed data from 455,409 subjects in the Asia Pacific Cohort Studies Collaboration. Over a median of around six years follow-up, 371 deaths from UADTC were observed. The hazard ratio (95% confidence interval) for current smokers, compared with those who had never smoked, was 2.36 (1.76 – 3.16), adjusted for age and alcohol drinking. Tobacco control policies are urgently required in Asia to prevent millions of deaths from UADTC that smoking will otherwise cause.

The impact of smoking and quitting on household expenditure patterns and medical care costs in China

BACKGROUND

Smoking remains very common in Chinese men, and the economic burden caused by cigarette consumption on smokers and their families may be substantial. Using a large nationally representative household survey, the third National Health Services Survey (NHSS, 2003), we estimated the economic impact of smoking on households.

METHODS

Smoking status of all household members (over 15 years) was collected by interview for the NHSS, and households classified into one of seven categories based on their smoking status. Information on household income and expenditure, and use of health services was also obtained. We assessed both the "direct" costs (reducing funds available for spending on other commodities such as food, education, medical care, etc, using a fractional logit model), and "indirect costs" (increasing medical expenditures, using a log-linear model).

RESULTS

Every five packets of cigarettes consumed per capita per month reduces household spending on other commodities, most notably on education (by about 17 yuan per capita per annum) and medical care (11 yuan). The effects are greatest among low-income rural households. Households with quitters spend substantially more on medical care than never-smoking households (64 yuan for households with two or more quitters).

CONCLUSIONS

If a household member smokes, there is less money available for commodities such as education and medical care. Medical care expenditure is substantially higher among households with quitters, as ill-health is the main reason for quitting smoking in China. Smoking impoverishes a substantial number of poorer rural households.

Subjective, cognitive/psychomotor, and physiological effects of aripiprazole in Chinese light and heavy smokers

BACKGROUND

Drug addiction researchers have begun to study dopamine partial agonists as potential therapeutic agents. The partial dopamine D(2) receptor agonist aripiprazole has recently been tested as a treatment for stimulant and alcohol dependence in both animal and clinical studies.

METHODS

A randomized and placebo-controlled pilot clinical study was conducted in a population of Chinese light and heavy smokers to assess the effect of aripiprazole on various responses to smoking. The primary outcomes were subject's ratings on questionnaires of smoking urge, withdrawal syndromes, and cigarette evaluation. Placebo, 5, and 10mg aripiprazole were acutely administered in all participants, with administrations at least 7 days apart. Subjective responses to a smoked cigarette, working memory, and attention/psychomotor performance were assessed before and after drug administration in each experimental session. Abstinence-induced smoking urge, withdrawal symptoms, blood pressure, and heart rate were also measured every 45 min after drug administration. Finally, a cue-testing session was carried out 4h after each drug administration.

RESULTS

Administration of 10mg aripiprazole significantly decreased both the subjective response and psychological reward derived from smoking a cigarette in heavy smokers. While neither 5 nor 10mg aripiprazole significantly decreased abstinence-induced smoking urges or withdrawal symptoms in light and heavy smokers, these doses substantially attenuated drug cue-induced smoking urges in heavy smokers. Aripiprazole did not affect working memory or attention/psychomotor performance.

CONCLUSIONS

Light and heavy smokers responded differently to aripiprazole across various dependent measures. Aripiprazole may potentially affect various subjective responses to smoking in heavy smokers.

Results from the Albanian Adult Tobacco Survey

Tobacco use prevalence in Europe is characterized by large disparities, with Western nations reporting smoking rates generally below 25%, while Eastern nations have smoking rates usually above 30%. Albania provides a distressing case study for Eastern Europe in which the exposure to the West after the fall of the communist regime dramatically increased the availability of Western-type cigarettes, while adoption of counterbalancing tobacco control measures lagged far behind. Results based on the representative Albanian Adult Tobacco Survey (AATS) conducted in 2007 suggest that smoking is a major problem, with a 64% smoking prevalence among Albanian men. It is becoming an increasingly greater concern among women, whose smoking prevalence more than doubled since 1990, reaching 19% in 2007. Young women living in urban areas are particularly susceptible to tobacco use; about one-third of them reported that they smoke. About 85% of current smokers smoke daily and with very high intensity, which further increases their risk of dying of smoking-attributable diseases. Smoking and secondhand exposure kill about 3,800 Albanians per year, about one-fifth of all deaths in the country. In addition, tobacco use imposes opportunity costs on Albanian households, which spent $358.6 million on cigarettes in 2007, or about 6% of the gross domestic product (GDP). To reduce the health and economic burden caused by tobacco use, the Albanian government should implement and enforce evidence-based tobacco control policies such increasing cigarette taxes; promoting cessation, particularly via the health care system; and enacting stricter clean indoor air laws.

Psychosocial correlates of cigarette smoking among college students in China

The objectives are to examine the smoking practice and intention among Chinese college students and to explore the association between cigarette smoking and individual and psychosocial factors. Cross-sectional data were collected from 1874 students from 19 college campuses in Jiangsu province, China. Both bivariate and multivariate analyses were performed to assess the associations of smoking practice and smoking intention with various individual and psychosocial factors. There was a significant gender difference in both smoking practice and smoking intention. Overall, 53% of the participants (70% male and 31% female) reported ever having smoked in their lifetime and 29% of the sample (49% male and 5% female) reported having smoked in the past 30 days. About one-fourth of the sample (44% male and 6% female) thought they were likely to smoke in the next 6 months. Male gender, low family socioeconomic status, perception of more peer smoking, more perceived benefits of smoking, higher level of pro-smoking attitude, higher level of perceived cost of non-smoking and more involvement in other health risk were positively associated with being a past or current smoker. Likewise, male gender, older age, more friends smoking, greater perceived benefits of smoking, higher pro-smoking attitudes and more health risk involvement were associated with the likelihood to smoke in the next 6 months. The data suggest a substantial smoking experimentation among college students in China, which presents both a challenge and an opportunity to prevent a large proportion of experimenters from progressing to regular smokers. The findings in the current study can be used to inform the development of effective smoking intervention prevention programs among college students in China.

Cigarette smoking and changing trends of lung cancer incidence by histological subtype among Chinese male population

We analyzed the time trends of lung cancer by histological subtype in Hong Kong during 1991-2005, and examined how the time trends were influenced by the effects of birth cohort and calendar period of diagnosis. Cancer incidence data were obtained from Hong Kong Cancer Registry and population data from Census and Statistics Department. Age-standardized incidence rates were computed by the direct method using WHO 1966 standard population as reference. Period and cohort effects were assessed by using two separate Poisson regression models adjusting for age. From 1991 to 2005, the incidence rates in Hong Kong Chinese males decreased steadily. The decline in overall lung cancer incidence rates was limited primarily to the decrease in squamous cell carcinoma, which could be explained by the decreasing trend of cigarette smoking. Adenocarcinoma had been the most predominant histological subtype all along. The relatively horizontal trend of adenocarcinoma and the lack of cohort effect implied the important roles of gene-environment interaction and/or the use of low-tar and filter tip cigarettes. Our study suggests that different histological subtypes may represent different disease entities with perhaps some distinct risk factors. The hypotheses generated from this ecological study will need confirmation by subsequent analytic studies.

Mortality attributable to smoking in China

BACKGROUND

Smoking is a risk factor for many diseases and has been increasingly prevalent in economically developing regions of the world. We aimed to estimate the number of deaths attributable to smoking in China.

METHODS

We conducted a large, prospective cohort study in a nationally representative sample of 169,871 Chinese adults who were 40 years of age or older. Investigators for the China National Hypertension Survey collected data on smoking and other risk factors at a baseline examination in 1991 using a standard protocol. Follow-up evaluation was conducted in 1999 and 2000, with a response rate of 93.4%. We used multivariable-adjusted relative risk, prevalence of smoking, mortality, and population size in each age group, stratified according to sex, to calculate the number of deaths attributable to smoking in 2005.

RESULTS

There was a significant, dose-response association between pack-years smoked and death from any cause in both men and women after adjustment for multiple risk factors (P<0.001 for trend). We estimated that in 2005, a total of 673,000 deaths (95% confidence interval [CI], 564,700 to 781,400) were attributable to smoking in China: 538,200 (95% CI, 455,800 to 620,600) among men and 134,800 (95% CI, 108,900 to 160,800) among women. The leading causes of smoking-related deaths were as follows: cancer, 268,200 (95% CI, 214,500 to 321,900); cardiovascular disease, 146,200 (95% CI, 79,200 to 213,100); and respiratory disease, 66,800 (95% CI, 20,300 to 113,300).

CONCLUSIONS

Our study documents that smoking is a major risk factor for mortality in China. Continued strengthening of national programs and initiatives for smoking prevention and cessation is needed to reduce smoking-related deaths in China.

The changing epidemiology of lung cancer

The 20th century witnessed the scourge of lung cancer as the disease rapidly rose the ranks to become the commonest cause of cancer mortality in the world. Epidemiological evidence conclusively associated cigarette smoking with the causation of lung cancer in the 1950s. Since then and the few decades after, lung cancer of the squamous cell or small cell histological subtypes was mainly diagnosed among male smokers in developed countries. As we move into the 21st century, the incidence of lung cancer is unlikely to abate but the burden will shift from the developed to the less-developed countries. Other epi-demiological changes of lung cancer include the narrowing of the gap between men and women affected by the disease, predominance of the adenocarcinoma histological subtypes as well as more never-smokers afflicted with the disease. Unless we eliminate tobacco smoking completely, lung cancer will continue its wrath into the 21st century.

Cardiovascular disease in Chinese women: an emerging high-risk population and implications for nursing practice

BACKGROUND

Globally, cardiovascular disease (CVD) is the leading cause of death among women. In China, the burden of CVD is increasing at an alarming rate; yet, it is underestimated and has important primary, secondary, and tertiary prevention issues.

AIM

This article seeks to document the issues surrounding the increased rate of CVD among Chinese women and describe the etiological factors and potential strategies to decrease the burden of disease.

METHODS

The Medline, Current Information in Nursing and Allied Health Literature, Ovid, Science Direct, and Government Reports were searched using the key words heart disease, cardiovascular, ischemic heart disease, coronary, women, and Chin (China, Chinese). Articles were selected if they described epidemiological factors and/or interventions to address heart disease in Chinese women.

FINDINGS

Rapid industrialization and urbanization in China have extended the life expectancy of the population, particularly among women. Social, political, and economic factors have caused lifestyle changes that have a direct bearing on health. Heart disease has become the most common cause of death among Chinese women and the second most common cause among men. Paradoxically, prevention and management strategies are sparse in relation to the high prevalence. A number of modifiable risk factors have been identified as major contributors of CVD and should be a focus of primary, secondary, and tertiary prevention.

CONCLUSION

Cardiovascular disease is already a leading cause of death and disability among Chinese women. The high prevalence of risk factors and low rate of awareness, treatment, and control signal an urgent need for focusing on this issue in Chinese women. Strategies on individual, community, and government levels are recommended. Involving Chinese nurses in these strategies is essential.

Emergence of chronic non-communicable diseases in China

China has experienced an epidemiological transition shifting from the infectious to the chronic diseases in much shorter time than many other countries. The pace and spread of behavioural changes, including changing diets, decreased physical activity, high rates of male smoking, and other high risk behaviours, has accelerated to an unprecedented degree. As a result, the burden of chronic diseases, preventable morbidity and mortality, and associated health-care costs could now increase substantially. China already has 177 million adults with hypertension; furthermore, 303 million adults smoke, which is a third of the world's total number of smokers, and 530 million people in China are passively exposed to second-hand smoke. The prevalence of overweight people and obesity is increasing in Chinese adults and children, because of dietary changes and reduced physical activity. Emergence of chronic diseases presents special challenges for China's ongoing reform of health care, given the large numbers who require curative treatment and the narrow window of opportunity for timely prevention of disease.

Fatores associados à experimentação do cigarro em adolescentes

OBJETIVO: Analisar a prevalência e os fatores associados à experimentação do cigarro em adolescentes. MÉTODOS: Estudo transversal, utilizando-se questionário específico, onde foram entrevistados 2.883 estudantes do ensino fundamental e do 1º ano do ensino médio, de escolas localizadas na zona urbana da cidade de Cuiabá (MT). Estimou-se a prevalência e foram analisados os principais fatores relacionados à experimentação do cigarro. Após isso, obteve-se um modelo logístico hierarquizado descrevendo as chances da experimentação do cigarro relacionada com as variáveis investigadas. RESULTADOS: A prevalência da experimentação do cigarro foi de 30,2%. No modelo final de análise, as principais variáveis relacionadas com a experimentação do cigarro foram menor nível de escolaridade da mãe (OR = 2,44; IC95%: 1,72-3,47); menor nível socioeconômico (OR = 1,39; IC95%: 1,01-1,93); estudar na escola pública (OR = 1,56; IC95%: 1,22-2,00); estar no 1º ano do ensino médio (OR = 3,45; IC95%: 2,63-4,54); estudar no período noturno (OR = 2,44; 1,85-3,22); ter pais separados (OR = 1,23; IC95%: 1,02-1,49); já ter sido reprovado na escola (OR = 2,17; IC95%: 1,78-2,70); ter amigos fumantes (OR = 3,75; IC95%: 2,99-4,70); ter irmãos fumantes (OR = 2,44; IC95%: 1,82-3,27); e ser mais velho (17-19 anos) (OR = 2,44; IC95%: 1,39-4,17). CONCLUSÕES: Foi alta proporção de adolescentes que experimentaram o cigarro. Após ajuste para variáveis de confusão os fatores mais fortemente associados à experimentação do cigarro foram nível de escolaridade da mãe, idade do adolescente, estudar no período noturno, já ter sido reprovado na escola e ter amigos e irmãos fumantes. Medidas preventivas devem ser direcionadas aos adolescentes, dentro das instituições escolares, como forma de controle do tabagismo.

Association between psychological factors and adolescent smoking in seven cities in China

BACKGROUND

Cigarette smoking is a culturally accepted behavior among adult males in China. However, there is limited information on smoking among Chinese adolescents, particularly the information on the relationship between psychological well-being and smoking behavior among this population.

PURPOSE

This study explored associations between three psychological factors--anxiety, hostility, and depressive symptoms--and smoking behavior among Chinese adolescents.

METHODS

The data presented in this study are a cross-sectional slice from a longitudinal investigation of tobacco use and lifestyle carried out in China. The study population consisted of 4,724 7th and 11th grade students from seven large cities in China.

RESULTS

Odds ratios showed that anxiety, hostility, and depressive symptoms were significantly associated with a higher risk of lifetime smoking for both boys and girls.

CONCLUSION

Much like their Western counterparts, Chinese adolescents face developmental stress. The resulting distress may increase their risk for substance use and other health-risk behaviors.

Passive smoking and risk of peripheral arterial disease and ischemic stroke in Chinese women who never smoked

BACKGROUND

The association between secondhand smoke (SHS) and risk of peripheral arterial disease (PAD) and stroke remains uncertain.

METHODS AND RESULTS

We examined the relationship between SHS and cardiovascular diseases, particularly PAD and stroke, in Chinese women who never smoked from a population-based cross-sectional study in Beijing, China. SHS exposure was defined as exposure to another person's tobacco smoke at home or in the workplace. Cardiovascular disease events included coronary heart disease, stroke, and PAD. PAD was defined by signs of intermittent claudication as measured by the World Health Organization Rose questionnaire and an ankle-brachial index of <0.90. Among 1209 women who never smoked, 39.5% were exposed to SHS at home or in workplaces. Those individuals who were exposed to SHS had a significantly higher risk of coronary heart disease (adjusted odds ratio [OR], 1.69; 95% CI, 1.31 to 2.18) and ischemic stroke (OR, 1.56; 95% CI, 1.03 to 2.35) than those never exposed to SHS after adjustment for 13 potential risk factors. The adjusted ORs of PAD defined by intermittent claudication, by ankle-brachial index <0.90, and by either intermittent claudication or ankle-brachial index <0.90 were 1.87 (95% CI, 1.30 to 2.68), 1.47 (95% CI, 1.07 to 2.03), and 1.67 (95% CI, 1.23 to 2.16), respectively. Dose-response relationships were found between SHS exposure amount (cigarettes per day) and duration (minutes per day) and increasing prevalence of coronary heart disease, ischemic stroke, and PAD.

CONCLUSIONS

In China, SHS exposure in women is highly prevalent. In addition to being a risk factor for coronary heart disease, SHS should be considered an important risk factor for ischemic stroke and PAD in nonsmoking women.

Myths and attitudes that sustain smoking in China

China is a particularly critical country for global tobacco control. It has the world's largest number of smokers and is a prize target for the multinational tobacco companies. This article presents results from 80 focus groups and 30 in-depth interviews on the salient myths and misconceptions concerning active and passive smoking for the purpose of developing appropriate tobacco control policies and intervention strategies to reduce tobacco consumption and secondhand smoke exposure. All participants resided in three counties in Jiangxi, Henan, and Sichuan provinces and were from hospitals, schools, and rural and urban communities. The myths and misconceptions included the identification of smoking as a symbol of personal freedom, the importance of tobacco in social and cultural interactions, the ability to control the health effects of smoking through "reasonable" and "measured" use, and the importance of tobacco to the economy. These myths were found in nonsmokers and smokers alike, in both rural and urban areas, and across the key professional groups. For China to curb its current smoking epidemic, tobacco control efforts will have to persuasively address and counter prevailing misconceptions and social norms surrounding smoking. This article discusses the implications of misconceptions and prosmoking attitudes for tobacco control efforts in China.

Smoking pattern during pregnancy in Hong Kong Chinese

BACKGROUND

While the prevalence of young female smokers is rising among the Hong Kong Chinese population, data on their smoking pattern during pregnancy are limited.

AIMS

To investigate the smoking habit of Hong Kong Chinese women and their partners during pregnancy.

METHODS

Postal questionnaires were sent to 479 couples to explore their smoking patterns during pregnancy at one to two years after the index delivery.

RESULTS

Questionnaires were completed by 247 subjects. Among 117 women who were ever-smokers, 26% had stopped smoking before the index pregnancy, while 60% stopped and 14% reduced smoking during the pregnancy. Most women stopped smoking in the first trimester (93%) and prior to the first antenatal visit (79%). Those who used to smoke fewer cigarettes before pregnancy were more likely to stop smoking during pregnancy but women with a history of recreational drug use were more likely to continue smoking during pregnancy. The post-partum smoking relapse rate was 59% in women who had stopped smoking before or during their pregnancy. Only 2.6% of the partners who were ever-smokers stopped smoking before the pregnancy while smoking habits remained unchanged in 52%.

CONCLUSIONS

Approximately one-fifth of an unselected sample of Hong Kong mothers had a history of smoking prior to pregnancy. Pregnancy is an opportune time to implement smoking intervention programs for female smokers and their partners with an emphasis on the maintenance of post-partum smoking abstinence.

GSTM1 and GSTT1 gene deletions and the risk for nasopharyngeal carcinoma in Han Chinese

Southern China is a major nasopharyngeal carcinoma-endemic region. Environmental factors and genetic susceptibility contribute to nasopharyngeal carcinoma development in this area. Polymorphic deletions of GSTM1 and GSTT1 genes involved in the detoxification of potentially carcinogenic agents may be a risk factor for nasopharyngeal carcinoma. To investigate the roles of genetic variations of GSTM1 and GSTT1 in nasopharyngeal carcinoma susceptibility in the Chinese population, we conducted a case-control study of 350 nasopharyngeal carcinoma cases and 622 controls. GSTM1 and GSTT1 deletion variants were genotyped by multiplex PCR assays. Logistic regression analysis was used to estimate odds ratios and 95% confidence intervals (95% CI). No significant association was observed for either GSTM1- or GSTT1-null genotype independently in the contribution to nasopharyngeal carcinoma risk. To explore possible joint effects of the GSTM1- and GSTT1-null polymorphisms with each other and with other risk factors for nasopharyngeal carcinoma, we examined the association between each combined genotype and the risk for nasopharyngeal carcinoma stratified by gender and EBV replication status. We found that individuals who carried GSTM1/GSTT1-double null genotype had a higher risk for nasopharyngeal carcinoma in the male population (odds ratio, 1.76; 95% confidence interval, 1.04-2.97; P = 0.03); however, this was not significant after correction for multiple comparisons. No statistical difference was found between cases and controls in females and the subpopulation positive for immunoglobulin A antibodies to EBV capsid antigen for combined genotypes. Our results suggest that the GSTM1/GSTT1-double null genotype may be a risk factor for nasopharyngeal carcinoma among males in southern China, but this result warrants confirmation in other studies.

Hypertension control, predictors for medication adherence and gender differences in older Chinese immigrants

AIM

This paper is a report of a study to explore the relationship between demographic and cultural factors and antihypertensive medication adherence in older Chinese immigrants.

BACKGROUND

Hypertension is a well-known controllable risk factor for cardiovascular diseases worldwide, but only 20-80% of patients who take antihypertensive medications adhere adequately to their treatment regimen.

METHODS

A cross-sectional study was conducted between 2002 and 2003, with a convenience sample of 75 older men and 69 older women (n = 144, response rate 80%). Medication adherence was defined as > or =80% of the total score on the Morisky scale.

FINDINGS

Age (75.2 +/- 5.7 vs. 75.9 +/- 7.0 years, P = 0.51) and length of stay in the United States of America (12.7 +/- 6.4 vs. 12.7 +/- 6.6 years, P = 0.97) were similar for men and women. More men were married (85% vs. 46%, P < 0.01). A smaller proportion of men were poor (39% vs. 65%, P < 0.01), believed in religion (49% vs. 70%, P = 0.01), and could speak no English (32% vs. 57%, P < 0.01). Fewer men used Chinese herbs to treat hypertension (4% vs.13%). Hypertension control was low for men and women (53% and 48%, P = 0.51). Adherence in men and women was 69% and 75% (P = 0.42) respectively. For men, shorter length of stay in the United States of America was negatively associated with non-adherence (OR = 0.16; 95% CI: 0.05, 0.57). No association between length of stay and non-adherence was found for women.

CONCLUSION

More research, including gender-specific studies, is needed to understand better how to develop an effective and culturally sensitive strategy to help older Chinese immigrants manage their hypertension.

A pilot intervention for pregnant women in Sichuan, China on passive smoking

OBJECTIVE

The study aimed to reduce women's exposure to passive smoking, which has been linked to increased risk of cancer and other diseases. By exploring the knowledge, attitudes and behaviors of pregnant women with regard to secondhand smoke in the home environment, a model for intervention during the pregnancy was designed with the help of the intended beneficiaries and was piloted.

METHODS

The study had two phases. Phase 1 included focus group discussions and an iterative process to design an intervention. Phase 2 was the intervention itself, which included a series of motivational and patient communication activities, a resource booklet, clinician counseling, telephone hotline and regular telephone counseling. Pre- and post-intervention questionnaires were used to measure results.

RESULTS

Post-intervention questionnaires showed a significant increase in knowledge, a change in attitudes towards stronger disapproval and an increased likelihood of taking assertive action when exposed to secondhand smoke in the family.

PRACTICE IMPLICATIONS

The results of this study point to the fact that there is a need to give emphasis to passive smoking in the home environment and that the women's pregnancy is an effective conduit to increasing knowledge and bringing about change. The intervention model can become a part of the standard protocol for the care of pregnant women in hospital settings.

Family history of cancer and risk of lung cancer among nonsmoking Chinese women

The relationship between family cancer history in first-degree relatives and risk of lung cancer was evaluated among a population-based cohort of 71,392 female nonsmokers in Shanghai, China. A total of 179 newly diagnosed lung cancer patients were identified during 441,410 person-years of follow-up. Lung cancer risk was not elevated among those with a family history of lung cancer. However, risk of lung cancer was increased among subjects who had two or more first-degree relatives with any type of cancers {rate ratio [RR], 1.95 [95% confidence intervals (95% CI), 1.08-3.54] for two relatives with any cancers and RR, 3.17 [95% CI, 1.00-10.03] for three or more relatives with any cancer}. Having a family history of colorectal cancer (RR, 2.38; 95% CI, 1.21-4.70) and having siblings with stomach cancer (RR, 2.16; 95% CI, 1.01-4.65) and pancreatic cancer (RR, 4.19; 95% CI, 1.04-16.95) were also found to be associated with lung cancer risk. This cohort study indicated a moderate association of lung cancer risk with a family cancer history in general, but not with a family history of lung cancer specifically. The associations were stronger when a sibling, rather than a parent, was affected. The apparent link between lung cancer risk and a family history of colorectal, stomach, and pancreas cancers may be worth further investigation.

Cigarette smoking status and smoking cessation counseling of Chinese physicians in Wuhan, Hubei province

Among the 347 physicians surveyed, 58% of the male physicians and 18.8% of the female physicians were current cigarette smokers; 54.4% of the male and 70.4% of the female physicians often or always provided smoking cessation counseling for patients; 37.5% of the physicians thought that for a Chinese smoker, cigarette smoking served as a social lubricant; 31.5% thought it a habit; 21.7% thought it a stress reliever; and 9.2% thought it a social status symbol. The following 5 variables were significantly associated with physicians' smoking cessation counseling frequency: their smoking status, perceived success in their past counseling, perceived influence, perceived exemplary role, and perceived responsibility. To increase physicians' smoking cessation counseling, the Chinese Ministry of Health would need to discourage physicians to smoke and appeal to their sense of responsibility to help patients quit smoking.

Changing pattern of premature mortality burden over 6 years of rapid growth of the economy in suburban south-west China: 1998-2003

BACKGROUND

This study was conducted in Kunming, the capital of Yunnan, a poor province in south-west China experiencing rapid economic growth. The study examined the short-term trend in premature mortality burden from common causes of death in a suburban region between 1998 and 2003.

METHODS

Years of life lost (YLL) per 1000 population and mortality rate per 100,000 population were calculated from medical death certificates, and broken down by cause of death, sex and year without age weighting but with a discounting rate of 3%.

RESULTS

Non-communicable diseases contributed over 80% of all causes of YLL, with a slightly increasing trend. The combined rate for communicable, maternal, prenatal and nutritional deficiencies declined from 4.7 to 2.4 per 1000 population. Remarkably, declining trends in YLL were also seen for chronic obstructive pulmonary disease, drug use and road traffic accidents, whereas increasing trends were seen for ischaemic heart disease (IHD) and liver cancer (males). The YLL rate for stroke, self-inflicted injuries, lung cancer and stomach cancer fluctuated over time.

CONCLUSIONS

The region should focus on further control of IHD and liver cancer.

Disease burden of adult lung cancer and ischaemic heart disease from passive tobacco smoking in China

OBJECTIVE

To address the health hazards tobacco smoking imposes upon non-smokers in China, this paper estimates the burden of diseases in adults from passive tobacco smoking for two major diseases--lung cancer and ischaemic heart disease (IHD).

METHODS

The disease burden was estimated in terms of both premature mortality and disability adjusted life years (DALYs), a measure that accounts for both the age at death and the severity of the morbidity.

RESULTS

Passive smoking caused more than 22,000 lung cancer deaths in 2002 according to these estimates. When the toll of disability is added to that of mortality, passive smoking was responsible for the loss of nearly 230,000 years of healthy life from lung cancer. Using the evidence from other countries that links IHD to passive smoking, we estimated that approximately 33,800 IHD deaths could be attributable to passive smoking in China in 2002. Passive smoking is also responsible for the loss of more than one quarter of a million years of healthy life from IHD. Although most of the disease burden caused by active smoking occurs among men, women bear nearly 80% of the total burden from passive smoking. The number of deaths among women caused by passive smoking is about two-thirds of that caused by smoking for the two diseases we examined.

CONCLUSION

Even without considering the passive smoking risks for other diseases and among children that have been documented in other countries, passive smoking poses serious health hazards for non-smokers, especially for adult female non-smokers in China, adding more urgency to the need for measures to be taken immediately to protect the health of non-smokers and curb the nation's tobacco epidemic.

Influence of American acculturation on cigarette smoking behaviors among Asian American subpopulations in California

Using combined data from the population-based 2001 and 2003 California Health Interview Surveys, we examined ethnic and gender-specific smoking behaviors and the effect of three acculturation indicators on cigarette smoking behavior and quitting status among 8,192 Chinese, Filipino, South Asian, Japanese, Korean, and Vietnamese American men and women. After adjustment for potential confounders, current smoking prevalence was higher and the quit rate was lower for Korean, Filipino, and Vietnamese American men compared with Chinese American men. Women's current smoking prevalence was lower than men's in all six Asian American subgroups. South Asian and Korean American women reported lower quit rates than women from other ethnic subgroups. Asian American men who reported using only English at home had lower current smoking prevalence and higher quit rates, except for Filipino and South Asian American men. Asian American women who reported using only English at home had higher current smoking prevalence except for Japanese women. Being a second or later generation immigrant was associated with lower smoking prevalence among all Asian American subgroups of men. Less educated men and women had higher smoking prevalence and lower quit rates. In conclusion, both current smoking prevalence and quit rates vary distinctively across gender and ethnic subgroups among Asian Americans in California. Acculturation appears to increase the risk of cigarette smoking for Asian American women. Future tobacco-control programs should target at high-risk Asian American subgroups, defined by ethnicity, acculturation status, and gender.

Better understanding the influence of cigarette smoking and indoor air pollution on chronic obstructive pulmonary disease: a case-control study in Mainland China

BACKGROUND AND OBJECTIVE

Although the association between COPD and smoking status (non-smoking, ex-smoking and current smoking) and indoor air pollution in Chinese populations is well established, the link between COPD and the number of cigarettes smoked has not been examined. This study investigated the relationship between the total amount of cigarettes smoked (TACS) and indoor air pollution, with the risk of COPD among urban and rural Chinese adults.

METHODS

A nested case-control study was performed using data collected in a large community survey (N = 29 319) conducted between October 2000 and March 2001 in Nanjing, China. The exposure to indoor respiratory pollutants of cooking and heating materials and to passive cigarette smoke was compared in patients diagnosed with COPD (n = 1743) and controls matched for age, gender and residence (n = 1743).

RESULTS

The smoking rate among COPD patients was significantly higher than that among the controls. After controlling for possible confounders, the adjusted odds ratios for COPD increased across TACS tertiles: from lower (OR = 1.40, 95% confidence interval (CI): 1.09-1.79), to middle (OR = 1.55, 95% CI: 1.21-1.99), and upper (OR = 1.77, 95% CI: 1.37-2.29). Among smokers, women were significantly more likely to develop COPD than men (OR = 1.20, 95% CI: 1.02-1.41). There were no significant associations between COPD and domestic fuels used, kitchen ventilation or passive smoking. Heating in winter with coal was weakly but positively linked with COPD among non-smokers overall, among women non-smokers, and specifically for women living in urban as well as rural areas.

CONCLUSIONS

A clear dose-response relationship exists between cigarette smoking and COPD; compared with men, women smokers were more susceptible to COPD. Exposure to other respiratory pollutants in the home was not significantly associated with the diagnosis of COPD.

A longitudinal analysis of stressful life events, smoking behaviors, and gender differences in a multicultural sample of adolescents

Many studies have addressed the associations between stressful life events and adolescent smoking. Few studies, however, have examined gender differences, specifically with multicultural samples. This longitudinal study examines the relationship between 6 stress subscales and smoking behaviors 716 multicultural U.S. adolescents living in the greater Los Angeles area in 2000-2001. At baseline the ethnic break-down of the sample was 63% Latino and 26% Asian/PI and 70% were 11 years of age. Negative personal events were associated with lifetime smoking and negative school events were associated with intentions to smoke. Stratification of the sample by gender indicated that gender confounded the relationship between negative personal stress and lifetime smoking and negative school stress, positive personal stress and intentions to smoke. Two significant interactions were found. Findings indicate there are differential effects of stressful events between genders which may lead to smoking experimentation or intentions to smoke. Implications and limitations are discussed.

Asthmatic symptoms among pupils in relation to winter indoor and outdoor air pollution in schools in Taiyuan, China

BACKGROUND

There are few studies on associations between children's respiratory heath and air pollution in schools in China. The industrial development and increased traffic may affect the indoor exposure to air pollutants in school environment. Moreover, there is a need to study respiratory effects of environmental tobacco smoke (ETS) and emissions from new building materials in homes in China.

OBJECTIVES

We studied the associations between pupils' asthmatic symptoms and indoor and outdoor air pollution in schools, as well as selected home exposures, in a coal-burning city in north China.

METHODS

A questionnaire survey was administered to pupils (11-15 years of age) in 10 schools in urban Taiyuan, collecting data on respiratory health and selected home environmental factors. Indoor and outdoor school air pollutants and climate factors were measured in winter.

RESULTS

A total of 1,993 pupils (90.2%) participated; 1.8% had cumulative asthma, 8.4% wheezing, 29.8% had daytime attacks of breathlessness. The indoor average concentrations of sulfur dioxide, nitrogen dioxide, ozone, and formaldehyde by class were 264.8, 39.4, 10.1, and 2.3 microg/m3, respectively. Outdoor levels were two to three times higher. Controlling for possible confounders, either wheeze or daytime or nocturnal attacks of breathlessness were positively associated with SO2, NO2, or formaldehyde. In addition, ETS and new furniture at home were risk factors for wheeze, daytime breathlessness, and respiratory infections.

CONCLUSIONS

Indoor chemical air pollutants of mainly outdoor origin could be risk factors for pupils' respiratory symptoms at school, and home exposure to ETS and chemical emissions from new furniture could affect pupils' respiratory health.

Alcohol, tobacco, and diet in relation to esophageal cancer: the Shanghai Cohort Study

Prospective data on environmental exposures, especially with respect to alcohol, tobacco, and diet, in relation to the risk of esophageal cancer in high-risk populations are sparse. We analyzed data from a population-based cohort of 18,244 middle-aged and older men in Shanghai to identify risk factors for esophageal cancer in this high-risk population. The cohort was followed through 2006, and 101 incident esophageal cancer cases were identified. Cox proportional hazards models were used to estimate hazard ratios (HR) and their corresponding 95% confidence intervals (CI) for associations between exposures and esophageal cancer risk. With adjustment for tobacco use and other potential confounders, regular drinkers vs. nondrinkers of alcoholic beverages had a twofold risk of developing esophageal cancer (HR=2.02, 95% CI=1.31-3.12). With adjustment for alcohol and other potential confounders, long-term smokers (40+ yr) vs. nonsmokers of cigarettes showed a twofold risk of developing esophageal cancer (HR=2.06, 95% CI=1.11-3.82). Increased consumption of fruits (including oranges/tangerines), seafood, and milk were found to be protective against the development of esophageal cancer; HRs were decreased by 40-60% for high vs. low consumers after adjustment for cigarette smoking, alcohol drinking, and other confounders.

Substance use among rural-to-urban migrants in China: a moderation effect model analysis

BACKGROUND

Substance use represents a public health challenge in China. The rapidly growing rural-to-urban migrants, currently numbering 88 million, may be especially vulnerable to substance use.

METHODS

Levels of and risk factors for substance use were examined among 3,752 rural-to-urban migrants using cross-sectional data collected in 2002 in China. A moderation effect modeling analysis was applied to examine interactions of workplace with income and income with depression in predicting substance use.

RESULTS

Respondents (41.7% females) were 18 to 30 years of age (mean = 23.3, SD = 3.5) with an average of 4.26 years of migratory experience. The nine workplaces for migrants were construction companies, restaurants, barber shops/hair salons, stalls/small shops, massage parlors, factories, night clubs, hotels, domestic services. The 30-day smoking rate was 10.5% for females and 56.5% for males; the 30-day alcohol intoxication rate was 16.8% for females and 36.7% for males; and lifetime use of illegal drugs was 1.8% for females and 1.6% for males. Hair salons and massage parlors were associated with increased levels of substance use for both sexes; construction companies and night clubs were associated with more substance use among females. Differences in levels of substance use by workplace were associated with differences in income and depression, but the effect was neither linear nor homogenous.

CONCLUSIONS

Substance use is prevalent among rural-to-urban migrants, especially among female migrants. Workplace, income, and depression are associated with substance use interactively. Tailored substance use prevention is needed to target high-risk workplaces with specific efforts devoted to female migrants.

Differences in students' smoking-related knowledge, attitudes, and behaviors among public, factory, and private secondary schools in Guangzhou, China

BACKGROUND

The prevalence of smoking among Chinese adolescents has dramatically increased in recent years. The purpose of this study was to examine the differences in smoking-related knowledge, attitudes, and behaviors among Chinese students in 3 types of secondary schools.

METHODS

This cross-sectional study was conducted among 3,957 students of seventh, eighth, and ninth grades and 2,870 student parents from 3 public, 1 factory, and 2 general-paid private secondary schools at Guangzhou in 2004. Participants were asked to complete self-administered questionnaires about sociodemographic characteristics, smoking-related family and school environments, smoking-related knowledge and attitudes, and smoking behaviors.

RESULTS

The average scores of students' smoking-related knowledge and attitudes (higher score, more against smoking) were highest in the factory school, followed by public schools and private schools. The differences among them were statistically significantly (P < .05). The lifetime smoking prevalence was also significantly different (P < .001) among 3 types of schools: 35.4% in private schools, 17.4% in public schools, and 13.2% in the factory school. The prevalence of students' weekly smoking was also higher in private schools (6.2%) than in public schools (4.9%) or the factory school (4.0%). Similar disparity was observed in the prevalence of daily smoking (3.9% private, 3.5% public, and 2.7% factory). However, differences in weekly and daily smoking were not statistically significant (P > .05).

CONCLUSIONS

Compared with students in public and factory schools, those in general-paid private schools had poorer smoking-related knowledge, more supportive attitudes toward smoking, and more popular smoking behaviors. Therefore, more intensive smoking prevention programs should be implemented among them.

Smoking, quitting and mortality in an elderly cohort of 56,000 Hong Kong Chinese

BACKGROUND

Although the harms of smoking are well established, it is unclear how they extend into old age in the Chinese.

AIM

To examine the relationship of smoking with all-cause and major cause-specific mortality in elderly Chinese men and women, respectively, in Hong Kong.

METHODS

Mortality by smoking status was examined in a prospective cohort study of 56,167 (18,749 men, 37,416 women) Chinese aged > or = 65 years enrolled from 1998 to 2000 at all the 18 elderly health centres of the Hong Kong Government Department of Health.

RESULTS

After a mean follow-up of 4.1 years, 1848 male and 2035 female deaths occurred among 54,214 subjects (96.5% successful follow-up). At baseline, more men than women were current smokers (20.3% vs 4.0%) and former smokers (40.8% vs 7.9%). The adjusted RRs (95% CI) for all-cause mortality in former and current smokers, compared with never smokers, were 1.39 (1.23 to 1.56) and 1.75 (1.53 to 2.00) in men and 1.43 (1.25 to 1.64) and 1.38 (1.14 to 1.68) in women, respectively. For current smokers, the RRs (95% CI) for all-cause mortality were 1.59 (1.39 to 1.82), 1.72 (1.48 to 2.00) and 1.84 (1.43 to 2.35) for daily consumption of 1-9, 10-20 and > 21 cigarettes, respectively (p for trend <0.001). RRs (95% CI) were 1.49 (1.30 to 1.72) and 2.20 (1.88 to 2.57) in former and current smokers for all deaths from cancer, and 1.24 (1.04 to 1.47) and 1.57 (1.28 to 1.94) for all cardiovascular deaths, respectively. Quitters had significantly lower risks of death than current smokers from all causes, lung cancer, all cancers, stroke and all cardiovascular diseases.

CONCLUSIONS

In old age, smoking continues to be a major cause of death, and quitting is beneficial. Smoking cessation is urgently needed in rapidly ageing populations in the East.

Second-hand tobacco smoke in public places in urban and rural China

OBJECTIVE

To assess airborne nicotine concentrations as an indicator of second-hand smoke (SHS) exposure in public places in both urban and rural areas of China.

DESIGN

Measurement of vapour-phase nicotine concentration using a common protocol in all locations. A total of 273 samplers were placed for 7 days in urban and rural areas of China, including Beijing and the capital city, and a county (rural) area of the following provinces: Sichuan (Chengdu/Mianzhu), Jiangxi (Nanchang/Anyi) and Henan (Zhengzhou/Xin'an).

SETTING

Samplers were placed in hospitals, secondary schools, city government buildings, train stations, restaurants and entertainment establishments (internet cafes, mahjong parlours and karaoke bars) in each location.

MAIN OUTCOME MEASURE

The time-weighted average airborne concentration of nicotine (microg/m3) was measured by gas chromatography.

RESULTS

Airborne nicotine was detected in 91% of the locations sampled. Beijing had the highest nicotine concentrations in most indoor environments (median 3.01 microg/m3) and Chengdu had the lowest concentrations (median 0.11 microg/m3). Overall, restaurants and entertainment establishments had the highest nicotine concentrations (median 2.17 and 7.48 microg/m3, respectively). High nicotine concentrations were also found in government buildings and in train stations.

CONCLUSIONS

The data collected in this study provide evidence that SHS exposure is frequent in public places in China. Environmental nicotine concentrations in China provide evidence for implementation and enforcement of smoke-free initiatives in public places in China and indicate the need for protecting the public from exposure to SHS.

The impact of immigration status on tobacco use among Chinese-American adults in Texas

OBJECTIVES

This study analyzed the impact of immigration status on current tobacco use among adult Chinese-Americans living in Texas.

METHODS

A survey was administered in Chinese and English in 2004 to assess tobacco use among Chinese-American adults using a stratified probability sample from two large metropolitan areas in Texas. Data were adjusted for unequal probability of selection and weighted to provide state-wide estimates for Chinese-Americans in Texas.

RESULTS

The study sample was comprised of 1,054 Chinese-American adults. The overall current smoking rate was 11.1% with men's rates much higher (16.1%) than women's (6.7%). Lower household income and education increased smoking among males but more educated females had a tendency to smoke more. Although overall smoking rate among Chinese-Americans was significantly lower than the general Texas population (20.6%), smoking rate among recent immigrant men (<5 years in the U.S.) was alarmingly higher (28.0%). U.S.-born Chinese-American men's smoking rate (25.0%) is similar to that of their U.S.-born counterparts (23.7%). U.S.-born Chinese-American men initiated smoking 4 years earlier (13.8 years) than their immigrant counterparts.

CONCLUSIONS

Although Chinese-Americans in Texas had overall lower smoking rates than the general population, the high smoking rates among recently immigrated men emphasize the need for cessation activities targeting this group.

Asian herbal-tobacco cigarettes: "not medicine but less harmful"?

OBJECTIVE

To describe the development and health claims of Asian herbal-tobacco cigarettes.

METHODS

Analysis of international news sources, company websites, and the transnational tobacco companies' (TTC) documents. PubMed searches of herbs and brands.

RESULTS

Twenty-three brands were identified, mainly from China. Many products claimed to relieve respiratory symptoms and reduce toxins, with four herb-only products advertised for smoking cessation. No literature was found to verify the health claims, except one Korean trial of an herb-only product. Asian herbal-tobacco cigarettes were initially produced by China by the 1970s and introduced to Japan in the 1980s. Despite initial news about research demonstrating a safer cigarette, the TTC analyses of these cigarettes suggest that these early products were not palatable and had potentially toxic cardiovascular effects. By the late 1990s, China began producing more herbal-tobacco cigarettes in a renewed effort to reduce harmful constituents in cigarettes. After 2000, tobacco companies from Korea, Taiwan, and Thailand began producing similar products. Tobacco control groups in Japan, Taiwan, and Thailand voiced concern over the health claims of herbal-tobacco products. In 2005, China designated two herbal-tobacco brands as key for development.

CONCLUSION

Asian herbal-tobacco cigarettes claim to reduce harm, but no published literature is available to verify these claims or investigate unidentified toxicities. The increase in Asian herbal-tobacco cigarette production by 2000 coincides with the Asian tobacco companies' regular scientific meetings with TTCs and their interest in harm reduction. Asia faces additional challenges in tobacco control with these culturally concordant products that may discourage smokers from quitting.

Modifiable family and school environmental factors associated with smoking status among adolescents in Guangzhou, China

OBJECTIVE

To identify modifiable family and school environmental factors associated with Chinese adolescent smoking behaviors including never-smoking, experimental smoking, regular smoking, and attempting to quit.

METHODS

A cross-sectional survey using self-reported questionnaires was conducted in Huangpu, Guangzhou in December of 2004. A total of 3957 pupils agreed to complete the questionnaires. The prevalence odds ratio (risk) of experimental smoking was compared to never-smoking, adjusting for gender and age in unconditional logistic regression analysis. The risk of regular smoking was compared to experimental smoking, and the risk of attempting quitting was analyzed in regular smokers.

RESULTS

The cigarette smoking of peers, mothers, fathers, brothers, and supervising teachers, passive smoking, and seeing someone smoking on campus increased the risk of experimental smoking vs. nonsmoking, while no-smoking signs, perceived anti-tobacco atmosphere in school, and being taught smoking-related health knowledge decreased the risk. The factors associated with regular smoking compared to experimental smoking included the smoking of peers, brothers, fathers and supervising teachers, teacher's tolerance, and passive smoking. Being taught smoking-related knowledge, perceived anti-tobacco atmosphere and no-smoking signs in school were positively associated with regular smoker's attempt to quit, while supervising teacher's smoking, parents' and teachers' tolerance could delay it.

CONCLUSIONS

These modifiable family and school environmental factors as well as their interaction with gender and age should be highly considered in adolescent smoking prevention in China.

Using NHANES oral health examination protocols as part of an esophageal cancer screening study conducted in a high-risk region of China

BACKGROUND

The oral health status of rural residents in the People's Republic of China has not been extensively studied and the relationship between poor oral health and esophageal cancer (EC) is unclear. We aim to report the oral health status of adults participating in an EC screening study conducted in a rural high-risk EC area of China and to explore the relationship between oral health and esophageal dysplasia.

METHODS

National Health and Nutrition Examination Survey (NHANES) oral health examination procedures and the Modified Gingival Index (MGI) were used in a clinical study designed to examine risk factors for esophageal cancer and to test a new esophageal cytology sampling device. This study was conducted in three rural villages in China with high rates of EC in 2002 and was a collaborative effort involving investigators from the National Institutes of Health and the Cancer Institute of the Chinese Academy of Medical Sciences.

RESULTS

Nearly 17% of the study participants aged 40-67 years old were edentulous. Overall, the mean number of adjusted missing teeth (including third molars and retained dental roots) was 13.8 and 35% had 7 contacts or less. Women were more likely to experience greater tooth loss than men. The average age at the time of first tooth loss for those with no posterior functional contacts was approximately 41 years for men and 36 years for women. The mean DMFT (decayed, missing, and filled teeth) score for the study population was 8.5. Older persons, females, and individuals having lower educational attainment had higher DMFT scores. The prevalence of periodontal disease (defined as at least one site with 3 mm of attachment loss and 4 mm of pocket depth) was 44.7%, and 36.7% of the study participants had at least one site with 6 mm or more of attachment loss. Results from a parsimonious multivariate model indicate that participants with poor oral health wemore likely to have esophageal dysplasia (OR = 1.59; 95% CI 1.06, 2.39).

CONCLUSION

This report describes the first use of NHANES oral health protocols employed in a clinical study conducted outside of the United States. The extent and severity of poor oral health in this Chinese study group may be an important health problem and contributing factor to the prevalence of EC.

The reasons coronary heart disease mortality has increased in China

To inaugurate the fifth year of its publication, The American Heart Hospital Journal (AHHJ) focused its Winter 2007 issue on health care systems from around the world, with 8 articles contributed by national leaders in their respective countries. Due to the interest and wide range of expertise in the international cardiac community, we will continue to publish Special Reports throughout 2007 on this topic. We invite members of the international community to share with readers of the AHHJ, their insights on the strengths and weaknesses of their respective health care and cardiac care systems, as well as their ideas and aspirations for future change.

Chinese physicians and their smoking knowledge, attitudes, and practices

BACKGROUND

China has the most smokers among the world's nations. Physicians play a key role in smoking cessation, but little is known about Chinese physicians and smoking.

METHODS

This 2004 clustered randomized survey of 3552 hospital-based physicians from six Chinese cities measured smoking attitudes, knowledge, personal behavior, and cessation practices for patients. Descriptive statistics and multivariate analysis of factors associated with asking about or advising against smoking were conducted in 2005 and 2006.

RESULTS

Smoking prevalence was 23% among all Chinese physicians, 41% for men and 1% for women. Only 30% report good implementation of smoke-free workplace policies and 37% of current smokers have smoked in front of their patients. Although 64% usually advise smokers to quit, only 48% usually ask about smoking status, and 29% believe most smokers will follow their cessation advice. Less than 7% set quit dates or use pharmacotherapy when helping smokers quit. Although 95% and 89%, respectively, know that active or passive smoking causes lung cancer, only 66% and 53%, respectively, know that active or passive smoking causes heart disease. Physicians were significantly more likely to ask about or advise against smoking if they believed that counseling about health harms helps smokers quit and that most smokers would follow smoking-cessation advice.

CONCLUSIONS

Physician smoking cessation, smoke-free workplaces, and education on smoking-cessation techniques need to be increased among Chinese physicians. Strengthening counseling skills may result in more Chinese physicians helping smoking patients to quit. These improvements can help reduce the Chinese and worldwide health burden from smoking.