Article Commentary: Men, Women, and Pain

Factors Contributing to Sex Differences in Health-Related Quality of Life After Ischemic Stroke: BASIC (Brain Attack Surveillance in Corpus Christi) Project

Background Women have been reported to have worse health-related quality of life (HRQoL) following stroke than men, but uncertainty exists over the reasons for the sex difference. Methods and Results We included all ischemic strokes registered with the BASIC (Brain Attack Surveillance in Corpus Christi) project (May 2010-December 2016), a population-based stroke study, who completed a 90-day outcome interview. Information on baseline characteristics was obtained from medical records and in-person interviews. HRQoL was measured by the 12-item short-form Stroke Specific Quality of Life Scale. Multivariable Tobit regression was used to estimate the mean difference in overall HRQoL scores (range, 1-5; higher indicating better HRQoL) between sexes and to identify contributing factors to the differences. We included 1061 cases with complete data on HRQoL and covariates (median age, 67 years; 51% women). In unadjusted analyses, women had poorer overall HRQoL than men (mean difference, -0.26 [95% CI, -0.40 to -0.13]). Contributors to this difference included sociodemographic/prestroke factors (eg, age, race and ethnicity, prestroke function), risk factors/comorbidities (eg, history of stroke, Alzheimer disease/dementia), and initial stroke severity. Sociodemographic/prestroke factors explained 62% of the sex difference (mean difference, -0.08 [95% CI, -0.21 to 0.04]). In a fully adjusted model that included adjustment for all confounding factors, the sex difference was eliminated and became nonsignificant (mean difference, -0.03 [95% CI, -0.16 to 0.09]). Conclusions Poorer HRQoL in women compared with men was observed and explained by the combination of sociodemographic and prestroke factors, including physical function before stroke and stroke severity. The findings suggest potential subgroups of women who might benefit from more targeted interventions before and after stroke to improve HRQoL.

Effect of Topical Sesame Oil on the Severity of Pain in Patients With Limb Trauma: A Randomized Controlled Trial

Objective

The purpose of this study was to investigate the effect of topical use of sesame oil on pain severity in patients with limb trauma.

Methods

A placebo-controlled randomized controlled trial was conducted on 120 patients with nonpenetrating upper and lower limb traumas admitted to the trauma emergency department. The patients were allocated to either the sesame oil group or the placebo group using the stratified random sampling technique based on trauma size and age. Depending on the trauma area, sesame or placebo oil were poured on the trauma site and massaged for 5 to 7 minutes. The intervention was repeated twice a day for 3 days at home. Pain severity was measured using the numeric pain scale before intervention on the first day and 30 minutes after each intervention for 3 days, twice a day. Data were analyzed using descriptive and analytical tests including the independent t test, χ² test, Fisher exact test, Mann-Whitney U test, Friedman test, and multiple linear regression analysis. The significance level was set at 0.05.

Results

The decreasing trend of pain was significant in both the intervention and placebo groups (P < .001). Comparison of the trend of changes in pain scores between the 2 groups showed that the mean changes of pain severity were higher in the intervention group compared with the placebo group in all assessments. There was a significant difference in the rate of analgesic consumption in the intervention group compared with the placebo group (P < .001). However, there was no significant difference between the 2 groups regarding pain severity. Pain reduction was negatively associated with body mass index (b = -0.091, P = .003), amount of received pain medication (b = -0.001, P = .039), and area of trauma (b = -0.002, P = .039). Pain reduction was greater in male patients than female patients (b = 0.676, P = .015). The effect of sesame oil on pain changes was not significant. No adverse side effects were reported.

Conclusion

This study showed that despite less use of analgesics in the intervention group than in the placebo group, sesame oil did not have any statistically significant effects on the severity of limb trauma pain. Further research is needed regarding the effect of topical sesame oil application on pain as a safe and uncomplicated intervention.

Sex differences in quality of life after stroke were explained by patient factors, not clinical care: evidence from the Australian Stroke Clinical Registry

BACKGROUND AND PURPOSE

Women may receive stroke care less often than men. We examined the contribution of clinical care on sex differences and health-related quality of life (HRQoL) after stroke.

METHODS

We included first-ever strokes registered in the Australian Stroke Clinical Registry (2010-2014) with HRQoL assessed between 90 and 180 days after onset (EQ-5D-3L instrument) that were linked to hospital administrative data (up to 2013). Study factors included sociodemographics, comorbidities, walking ability on admission (stroke severity proxy) and clinical care (e.g. stroke unit care). Responses to the EQ-5D-3L were transformed into a total utility value (-0.516 'worse than death' to 1 'best' health). Quantile regression models, adjusted for confounding factors, were used to determine median differences (MD) in utility scores by sex.

RESULTS

Approximately 60% (6852/11 418) of stroke survivors had an EQ-5D-3L assessment (median 139 days; 44% female). Compared with men, women were older (median age 77.1 years vs. men 71.2 years) and fewer could walk on admission (37.9% vs. men 46.1%, P < 0.001). Women had lower utility values than men, and the difference was explained by age and stroke severity, but not clinical care [MD_{adjusted =} -0.039, 95% confidence interval: -0.056, -0.021]. Poorer HRQoL was observed in younger men (aged <65 years), particularly those with more comorbidities, and in older women (aged ≥75 years).

CONCLUSIONS

Stroke severity and comorbidities contribute to the poorer HRQoL in young men and older women. Further studies are needed to understand age-sex interaction to better inform treatments for different subgroups and ensure evidence-based treatments to reduce the severity of stroke are prioritized.