Drug dependent parents: childcare responsibilities, involvement with treatment services, and treatment outcomes

Relatively little is known about the treatment of drug dependent parents. This study of drug misusers (n=1075) investigates the involvement of parents with treatment services, childcare arrangements before and during treatment, and outcomes at 1-year follow up. Almost half the sample (46%) were parents. Women were more likely to be responsible for the care of children. Parents, and especially women, who looked after children, were less likely to receive residential treatment. Illicit drug use and psychiatric symptoms were reduced at 1 year. Outcomes did not differ by gender or parenting status, but there was an interaction effect for psychiatric symptoms: for women, looking after children during treatment was associated with less improvement in psychiatric symptoms at follow up. Such women face special difficulties in access to services and would benefit if treatment services were able to offer improved access and childcare support.

Physical health problems among patients seeking treatment for alcohol use disorders: a study in six European cities

The present study investigates physical health problems among patients with alcohol use disorders at alcohol treatment agencies in six European cities. The sample comprised 315 patients with a primary alcohol use disorder. Data were collected at admission to treatment using a structured research protocol, and ratings were made by a medically qualified physician subsequent to a physical examination of the patient. Physical health problems were extremely common: 79% of the sample had at least one problem, and 59% had two or more problems. Health problems were often serious, and 60% had at least one health problem that required treatment. The most common problems were gastrointestinal and liver disorders, but about a quarter of the sample had cardiovascular or neurological problems. Frequency of drinking, duration of alcohol use disorder, and severity of alcohol dependence were associated with increased physical morbidity. Current smoking status and age were also associated with poorer physical health. Older drinkers had more physical health problems although they were less severely alcohol dependent than their younger counterparts. The high prevalence of physical health problems among problem drinkers provides opportunities of screening for alcohol use disorders not only in specialist alcohol treatment services but also in other health-care settings. It is recommended that alcohol treatment agencies should provide a full routine health screen of patients at admission to treatment with provision or referral to appropriate treatment.

In-patient detoxification procedures, treatment retention, and post-treatment opiate use: comparison of lofexidine + naloxone, lofexidine + placebo, and methadone

OBJECTIVE

In-treatment and post-treatment outcomes were compared for three detoxification procedures (lofexidine+naloxone, lofexidine+placebo naloxone, and methadone). SAMPLE AND DESIGN: The sample was 137 opiate dependent in-patients. Detoxification treatments were 6-day lofexidine+naloxone (n=45), lofexidine+placebo naloxone (n=46), or 10-day methadone reduction (n=46). A cohort study design was used with double-blind random allocation to lofexidine+naloxone versus lofexidine+placebo. Patients who did not consent to, or who were excluded from randomisation received methadone.

RESULTS

Outcome differences between treatment groups at follow-up were generally associated with length of stay post-detoxification rather than detoxification procedure. Among patients who were not opiate abstinent throughout follow-up (n=85), those who received lofexidine+naloxone detoxification reported a longer interval to first heroin use, with an interaction between detoxification medication and subsequent retention in treatment also identified.

CONCLUSIONS

Detoxification medication may influence medium-term opiate use outcomes via its effect upon retention in treatment.

Comparison of buprenorphine and methadone in the treatment of opiate withdrawal: possible advantages of buprenorphine for the treatment of opiate-benzodiazepine codependent patients?

The study is a preliminary investigation to compare the effectiveness of buprenorphine and methadone as opiate detoxification treatments. The sample comprised 123 drug misusers who were dependent upon opiates only or who were codependent upon opiates and benzodiazepines. Drug misusers dependent upon methadone doses up to 70 mg were eligible for the study. Detoxification took place within a specialist inpatient drug-dependence unit. Withdrawal symptom severity was assessed on a daily basis by means of the Short Opiate Withdrawal Scale. Outcome was assessed for reductions in severity of withdrawal symptoms, treatment retention, and treatment completion. Buprenorphine detoxification was associated with less severe opiate withdrawal symptoms than methadone. Opiate/Benzodiazepine codependent patients reported less severe withdrawal symptoms during treatment with buprenorphine than with methadone and were also more likely to complete detoxification when treated with buprenorphine.

Screening for cognitive functioning in psychiatric outpatients with schizophrenia, alcohol dependence, and dual diagnosis

Cognitive impairment is common to both schizophrenia and alcoholism. Despite increasing recognition that people with both disorders represent a problematic client group, little is known about the possible additive effect of a dual diagnosis upon impaired cognitive function. This study investigates impairment of cognitive functioning in patients with schizophrenia, alcohol dependence, or a dual diagnosis of schizophrenia and alcohol use disorder. It was hypothesised that patients with dual diagnosis would show greater cognitive impairment than those with a single diagnosis. The Mini-Mental State Examination (MMSE) and standardised measures of psychiatric health and substance use were administered to 120 community psychiatric patients with a diagnosis of schizophrenia, alcohol dependence and both conditions (dual diagnosis). Higher rates of cognitive impairment were found among dual diagnosis patients compared to the schizophrenia or alcohol patients. This was shown in age-adjusted measures of global functioning, and on the tests of language, reading and writing, and visuospatial construction. Despite its common usage, global MMSE scores were insensitive to the cognitive impairments typically found in these clinical groups. Where the MMSE is used as a screening tool, it is recommended that scores are adjusted for the effects of age.

Readiness for change and drug use outcomes after treatment

AIMS

The present study represents the first large-scale test of the capacity to predict illicit drug treatment outcomes of an instrument [Stages of Change and Treatment Eagerness Scale (SOCRATES)] purporting to measure processes underlying stages of change. The main hypothesis was that 'taking steps' should be predictive of less frequent use of illicit opiates (heroin and non-prescribed methadone) at follow-up.

DESIGN

The sample comprised 1075 people seeking treatment for drug abuse problems in 54 treatment agencies in England. The study uses a longitudinal, prospective cohort design. Structured interviews were conducted at treatment intake and at 1-year follow-up. Data were collected about illicit drug use (frequency of use of heroin, non-prescribed methadone, cocaine and amphetamines, and non-prescribed benzodiazepines) and other problems.

FINDINGS

Results failed to support the hypothesis that taking steps should be associated with less frequent use of illicit opiates at follow-up. No statistically significant associations of any kind were found between readiness for change measures and use of opiates or stimulants at follow-up. A negative association was found between taking steps and benzodiazepine misuse. Readiness for change measures were correlated with heroin use and psychiatric symptom scores at treatment intake.

CONCLUSIONS

Readiness for change measures were not associated with illicit drug use outcomes. Of the 12 hypothesized relationships between readiness for change measures and outcomes, our results show only one 'hit' and 11 'misses'.

A dimensional option for the diagnosis of substance dependence in DSM-V

In this paper we discuss the creation of dimensional equivalents for categorically defined substance use disorders (SUDs) in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-V), which now is being created. We begin with a review of the considerable literature that has accumulated on the dimensional properties of the SUDs. These studies have primarily examined the alcohol use disorders, but work relevant to other substances is reviewed as well. The weight of evidence indicates that SUDs fit well into a unidimensional concept. We next discuss potential advantages, drawbacks, and challenges in developing a dimensional alternative for the SUDs and highlight some issues for an ongoing research agenda to further explore the challenges. Finally we offer a specific proposal for a SUDs dimensional option for DSM-V. The model we propose is based on, and would relate directly back to, the categorical criteria that will be created for the SUDs by the substance use diagnostic workgroup. It is our contention that offering a dimensional equivalent for the DSM-V categories would be of great value, but that the categorical and dimensional definitions should be based on the same symptoms and closely linked. A dimensional scale that does not relate directly to the categorical definition would be counterproductive.

Remission of psychiatric symptoms among drug misusers after drug dependence treatment

The study investigates changes in psychiatric symptoms after drug dependence treatment, and relationships between pretreatment problems, illicit drug use, treatment retention, and changes in psychiatric symptoms. The sample comprised 662 drug-dependent adults recruited at admission to treatment in residential rehabilitation programs (15 agencies) or outpatient methadone treatment (16 methadone maintenance programs and 15 methadone reduction programs). Using a longitudinal, prospective cohort design, data were collected by structured interviews at intake to treatment and at 1-month and 6-month follow-ups. Reductions were found in a range of psychiatric symptoms after admission to drug dependence treatment and among patients treated in outpatient and in residential programs. These reductions occurred rapidly (during the first month) and were maintained at subsequent follow-up. At intake to treatment, 39% of the residential sample met criteria for psychiatric caseness. This figure dropped to 3% at both 1-month and 6-month follow-up. Among methadone patients, 15% met criteria for psychiatric caseness at intake, and this dropped to 5% at 1 month and 3% at 6 months. Improvement in psychiatric symptoms was positively related to treatment retention. Some of the psychiatric symptoms presented by drug-dependent patients at admission to treatment are associated with drug misuse and show rapid remission after substance misuse treatment.

Concurrent use and order of use of cocaine and alcohol: behavioural differences between users of crack cocaine and cocaine powder

AIMS

The study investigates patterns of cocaine use and alcohol use when these substances were taken on their own, the order of administration of alcohol and of cocaine when the two substances were taken together, and changes in the doses of alcohol and of cocaine when the two substances were taken together. The study further investigates differences in the combined use of the two substances by users of cocaine powder and crack cocaine.

DESIGN

Entry criteria for the study were current (previous 30 days) use of both alcohol and cocaine. Study participants (n = 102) were recruited from clinical and non-clinical settings. Data were collected by face-to-face structured interviews.

FINDINGS

Different patterns of combined cocaine and alcohol use were reported by cocaine powder and crack cocaine users. Cocaine powder users tended to take increased doses of both cocaine and alcohol when these were used in combination. During high-dose crack using episodes, crack users tended to drink lower amounts of alcohol than usual. Cocaine powder users tended to use cocaine and alcohol concurrently. Crack users tended to use alcohol at the end of crack-using sessions.

CONCLUSIONS

The observed differences are not understood clearly but may be influenced by differential effects of route of administration upon absorption, bioavailability and the balance of euphoric/dysphoric effects. Research studies of the combined use of cocaine and alcohol should distinguish explicitly between the use of cocaine by different routes of administration, and this should be specified in the description of subject samples.

Persistence of drug use during imprisonment: relationship of drug type, recency of use and severity of dependence to use of heroin, cocaine and amphetamine in prison

AIM

To investigate the persistence of use of heroin, cocaine and amphetamine drugs during imprisonment, and to identify factors associated with increased levels of persistence.

DESIGN

The use of heroin, cocaine and amphetamine by current prison inmates has been examined and, in particular, the relationship between drug use within prison and the type of drug used prior to imprisonment, recency of use and severity of dependence.

SETTING AND PARTICIPANTS

A randomly selected sample of 1009 adult male prisoners in 13 prisons in England and Wales during 1994/95; structured confidential interviews conducted by independent research staff. Enquiry about prior use of heroin, cocaine or amphetamine focused on three time-periods (ever, last year and last month pre-prison) and the use of these drugs during the first month of imprisonment.

FINDINGS

A total of 557 (55%) of the 1009 prisoners had used previously one of the three drugs selected for study: 58% had used heroin, 69% cocaine and 75% amphetamine. More than half (59%; 327/557) had used these drugs in the month before the current imprisonment. Drug use in prisons was most likely to occur among those who had used in the month prior to imprisonment. The persistence of heroin use in prison occurred more frequently (70%) than use of cocaine (20%) or amphetamine (15%). Of those using heroin pre-imprisonment, 67% considered they were dependent, compared to 15% and 22%, respectively, for cocaine and amphetamine users.

CONCLUSIONS

Changes in the drug-taking behaviour of drug users after imprisonment vary according to the type of drug being taken. Prisoners were much more likely to continue to use heroin than either cocaine or amphetamines while in prison. Heroin was most likely to be used by those who had been using heroin during the immediate pre-imprisonment period, and particularly by the two-thirds of heroin users who considered themselves dependent. In view of the high prevalence of prior use of these drugs by individuals currently imprisoned, continuing attention is required to study of their behaviour and of the impact of interventions that may be introduced during or following their incarceration.

Excessive drinking and other problem behaviours among 14-16 year old schoolchildren

The study investigates excessive drinking and associations with other problem behaviours in 2078 school students aged 14-16 years in seven London secondary schools. Using a cross-sectional design, a self-completion questionnaire assessed lifetime and recent (past month) alcohol and drug consumption, attitudes to alcohol use education, alcohol-related problems, psychological problems, educational aspirations, truancy, and delinquent behaviour. Excessive drinking was operationally defined as 10 or more units of alcohol per drinking occasion. At least one episode of excessive drinking was reported by 32% of the sample, with 10% reporting five or more episodes. Excessive drinking was positively associated with frequency of cigarette smoking, use of cannabis, positive attitudes towards illicit drugs, low educational aspirations, higher depression scores, frequent truancy, and involvement in delinquent behaviours. Excessive drinking is a problematic behaviour in its own right but it is also a marker for other problem behaviours, including illicit drug misuse and delinquency. Understanding and responding to alcohol misuse among adolescents requires attention to psychological, social and developmental factors other than alcohol consumption alone.

Effectiveness of drug and alcohol counselling during methadone treatment: content, frequency, and duration of counselling and association with substance use outcomes

AIMS

The study investigates the relationship between the type and severity of drug and alcohol use problems, and the provision of drug- and alcohol-counselling in methadone programmes. The study also specifically investigates the relationship between content, frequency and duration of counselling provided during the first month of treatment, and heroin, cocaine, and alcohol use outcomes at 6 months.

DESIGN, SETTING AND PARTICIPANTS

The sample comprised 276 patients receiving outpatient methadone treatment who were followed-up 6 months after treatment entry.

MEASUREMENTS

Data on client characteristics, drug and alcohol problems and on counselling received were collected by structured face-to-face interviews.

FINDINGS

Drug-focused counselling was associated with less frequent heroin and cocaine use at follow-up, but was not related to pre-treatment drug use. Alcohol-focused counselling was provided for those with higher levels of drinking at admission but was not significantly associated with drinking outcome at 6 months.

CONCLUSIONS

Results indicate that there are complex interactions between presenting substance use problems, provision of counselling and treatment outcomes. These interactions differ by substance type.

Concurrent use of alcohol and cocaine: differences in patterns of use and problems among users of crack cocaine and cocaine powder

AIM

To investigate differences in alcohol and drug consumption behaviours and related problems among users of cocaine powder versus crack cocaine.

METHODS

The sample of concurrent users of alcohol and cocaine (n = 102) was recruited from clinical and community (non-clinical) settings in London. Those recruited in the community were contacted by means of snowball sampling methods. Data were collected by means of face-to-face structured interviews.

RESULTS

Heavy drinking was common. There were differences in alcohol consumption between users of cocaine powder and crack cocaine. Cocaine powder users reported more frequent heavy drinking than crack users. Heavy drinking often involved drinking excessive amounts over prolonged periods. Crack cocaine users reported more serious problems associated with cocaine, other illicit drugs, psychological and physical health problems, and acquisitive crime.

CONCLUSIONS

Frequent heavy drinking represents a serious risk to the health of many cocaine users. The differences in alcohol consumption patterns confirm the importance of distinguishing between use of cocaine powder and crack cocaine. Few of the sample had received treatment for cocaine or alcohol problems. Healthcare professionals working in primary care or accident and emergency settings may need to be trained to detect, assess, and respond to concurrent alcohol and cocaine problems.

Relationship between cocaine use and mental health problems in a sample of European cocaine powder or crack users

Numerous studies have pointed out the risks of cocaine use for mental health. Most clinical studies report a high psychiatric comorbidity, mainly among crack users. In this paper the association of mental health problems with sociodemographic variables and patterns of use is analysed, based on data from a multicentre European study including a field survey of cocaine users in different settings. Bivariate analyses revealed that mental health problems were influenced by all variables under consideration, i.e. age, gender, social situation, crack use, days with cocaine use in the past month, lifetime use of cocaine, severity of dependence, and physical health. However, in a regression analysis, intensity of use, physical health, severity of dependence and social situation were found to be predictors of mental health problems, while crack use by itself was not. These findings suggest that mental health consequences are related more to the intensity than to the form of cocaine use.

Reductions in criminal convictions after addiction treatment: 5-year follow-up

Changes in criminal convictions were investigated among 1075 clients admitted to 54 drug misuse treatment services across England as part of the National Treatment Outcome Research Study (NTORS). Convictions data during the year prior to treatment, and at 1 year, 2 years, and 5 years after treatment intake were collected from the Home Office Offenders' Index, a national database of all convictions in adult and youth courts. Clinical data were collected by face-to-face interviews at intake to treatment, and at follow-up 1 year, 2 years, and 4-5 years after admission to treatment. During the year prior to treatment, 34% of the sample had been convicted of at least one offence. Conviction rates at all follow-up points were significantly lower than at intake. During the year prior to the 5-year follow-up, 18% of the sample had been convicted of at least one offence. Statistically significant reductions in the mean number of convicted offences were also found between treatment intake and 5-year follow-up. Reductions in convictions were found for acquisitive, drug selling, and violent crimes. Reductions in crime were associated with reductions in regular heroin use, age, and with stable housing. The results replicate previously reported findings of crime reductions among the NTORS cohort as indicated by self-reported measures of offending behaviour. The observed reductions in crime among drug misusers after treatment represent substantial changes in behaviour and have considerable personal, social and clinical significance. Reduced criminality also provides substantial economic benefits to society.

Induction of patients with moderately severe methadone dependence onto buprenorphine

Current clinical practice allows patients with low levels of physiological dependence on opioids (equivalent to methadone doses of 30 mg/d or less) to be transferred to buprenorphine. This study investigated the response of opioid-dependent patients receiving doses of methadone between 30-70 mg/d when transferred to buprenorphine at doses between 12-16 mg/d. Twenty-three patients receiving inpatient opioid detoxification agreed to take part in a trial of facilitated transfer to buprenorphine. Following the last morning dose of methadone, buprenorphine was substituted in doses increasing from 4 mg to a maximum of 16 mg, with adjunctive lofexidine (maximum of 2.4 mg/d). All except two patients successfully completed transfer to buprenorphine. To investigate the effect of initial methadone dose, the group was split into intermediate dose (ID; 30 - 49 mg/d; n = 10) and high dose (HD; 50-70 mg/d; n = 11) groups. Average stabilisation dose of buprenorphine for the sample who completed transfer was 14.0 mg/d (SD 2.3) and average daily lofexidine dose during transfer was 0.57 mg (SD 0.39). The HD group used significantly more lofexidine to complete transfer compared to the ID group. Increased opioid withdrawal symptoms, of mild severity as measured by the Short Opiate Withdrawal Scale (SOWS), were found in the HD group compared with the ID group during the first and last day of buprenorphine stabilisation. However, average SOWS scores for the whole of the period of transfer were not significantly different from those during the period of stabilisation on buprenorphine in either the ID or HD groups. This study suggests that transfer to buprenorphine is relatively uncomplicated from daily methadone doses of 30-70 mg in an inpatient setting and may be facilitated by use of lofexidine. This procedure may allow a larger proportion of opioid-dependent patients access to buprenorphine treatment.

The unique role of diamorphine in British medical practice: a survey of general practitioners and hospital doctors

AIMS

Diamorphine (heroin) is one of the longest established medications with a 130-year history. In British medicine diamorphine is sometimes used as a maintenance treatment for opiate addiction but is also routinely used in clinical practice to treat a number of general medical conditions. These uses are very different but are often confused by observers of the British system. The routine clinical use of diamorphine in medicine is unique to the UK, but this is not well known outside the UK. The present study investigates the use of diamorphine to treat medical conditions by general practitioners and by hospital doctors.

METHOD

In a survey of 141 medical practitioners who had prescribed diamorphine for the treatment of a medical condition, data were collected on conditions prescribed for, numbers of patients, dosage, routes of administration, duration of treatment, worries about prescribing diamorphine and observed adverse effects.

FINDINGS

Many doctors had prescribed diamorphine to a large number of patients. The four main conditions for which diamorphine had been prescribed in the previous year were myocardial infarction, palliative care, pulmonary oedema, and post-operative pain. More than half of the sample (57%) reported no reservations about prescribing diamorphine. Of the doctors (n = 60, 43%) who expressed worries, this was most often about possible problems of respiratory depression or respiratory arrest. Respiratory arrest/failure was also the most frequent observed adverse effect. Relatively few doctors reported worries about addiction.

CONCLUSIONS

Although diamorphine was widely used and most doctors regarded it as a useful medication, there remains insufficient research information about current clinical practice. At a time when diamorphine may be coming under increased scrutiny, more detailed information is required of its uses and applications.

Increased caseloads in methadone treatment programs: Implications for the delivery of services and retention in treatment

Changes in caseload and in the provision of counseling and comprehensive services were examined among 27 outpatient methadone programs across England between 1995 and 1999. The number of patients treated at the programs doubled during this time and average waiting times increased. More patients presented for treatment with alcohol and stimulant problems, dual diagnosis, and involvement in the Criminal Justice System. Provision of individual counseling and comprehensive services was high at both points, although services for family/relationship problems were reduced at followup. Changes were reported in disciplinary procedures. Drug positive urine tests were more likely to result in loss of patient privileges, and there was a significant increase in discharges for breaking program rules, missing appointments, and consuming alcohol. The study allows only tentative conclusions to be drawn, but these changes may be indicative of increased pressures placed on the programs and their staff.

Benzodiazepine co-dependence exacerbates the opiate withdrawal syndrome

Patients seeking treatment for opiate withdrawal are commonly also dependent on benzodiazepines, although the interactions between benzodiazepine and opiate dependence and withdrawal syndromes have been subject to little systematic investigation. This is the first study comparing type, severity and course of opiate withdrawal symptoms between opiate dependent patients with, and without, concurrent benzodiazepine dependence. Patients dependent only on opiates (n = 39), and patients dependent on both opiates and benzodiazepines (n = 22), were recruited from consecutive admissions to an in-patient drug treatment unit. Quantity and duration of prior opiate use was similar for both groups. Patients completed daily self-ratings of opiate withdrawal (SOWS) for the duration of a standard in-patient detoxification treatment. Co-dependent patients were detoxified from benzodiazepines and opiates concurrently. Co-dependent patients reported a more severe withdrawal symptoms than patients withdrawing from opiates alone. Co-dependent patients had significantly more severe opiate withdrawal symptoms. Concurrent benzodiazepine withdrawal exacerbates opiate specific withdrawal symptoms. Possible psychological and neurophysiological mechanisms for the observed sensitisation are discussed.

Changes in route of drug administration among continuing heroin users: outcomes 1 year after intake to treatment

This study investigates the type and extent of changes in route of drug administration among heroin users after treatment: whether injectors move to other routes of use; whether changes in route for one drug influence routes used for other drugs; and associations between changes in route of administration and other substance use outcomes. The sample comprised 641 heroin users recruited to 54 UK treatment programmes. At intake, the main routes of heroin use were injecting (61%) and "chasing the dragon" (37%). After 1 year, 81% of those using heroin took it by the same route as at intake, while 19% reported a change, with 14% switching from injecting to chasing. Changes from injecting to chasing were associated with improvements in other substance use behaviours. Changes in route represent an important aspect of drug-taking behaviours. Interventions to prevent the change to injecting should be developed and offered to noninjectors. "Reverse transitions" (from injecting to chasing) may represent a useful intermediate treatment goal for drug injectors who cannot achieve abstinence.

Alcohol use outcomes and heavy drinking at 4-5 years among a treatment sample of drug misusers

This paper investigates alcohol outcomes and heavy drinking among 418 drug misusers from the National Treatment Outcome Research Study who completed followup interviews at 1, 2, and 4-5 years. About a quarter of the sample were drinking heavily at intake. Alcohol consumption at followup was predicted by drinking prior to intake, and about a quarter of those who were classified as alcohol abstainers, medium-level drinkers, or heavy drinkers at intake, remained in the same drinking category at all assessment points. Drinking outcomes were not related to opioid use. Heavy drinkers at followup were more likely to be using non-opioid drugs. The poor drinking outcomes are a matter for concern. Drug misusers with concurrent alcohol problems may require special treatment provision. The extent of heavy drinking among drug misusers both before and after treatment indicates a need to develop and strengthen programs and interventions to tackle alcohol-related problems in this patient group.