Are there sex differences in transdermal nicotine replacement therapy patch efficacy? A meta-analysis

Area of Science:

• Pharmacology
• Public Health
• Clinical Trials

Background:

• Rising smoking-related morbidity and mortality rates in women necessitate effective cessation strategies.
• Limited data exist on sex-specific efficacy of pharmacological smoking cessation aids.
• Behavioral therapies show lower success rates for women, highlighting the need for effective pharmacological options.

Purpose of the Study:

• To investigate potential sex-based differences in the therapeutic efficacy of nicotine replacement therapy (NRT) for smoking cessation.
• To analyze data from randomized clinical trials to determine if NRT is equally effective in men and women.

Main Methods:

• A meta-analysis was conducted on 11 randomized clinical trials of NRT that met inclusion criteria.
• Odds ratios for NRT versus placebo were calculated separately for males and females at multiple time points (<6 months, 6 months, 12 months).
• Pooled estimates were used to compare the effect of sex on NRT response.

Main Results:

• NRT demonstrated effectiveness for smoking cessation in both men and women across all measured time points.
• Odds ratios for NRT efficacy were consistently significant for men and women at <6, 6, and 12 months post-intervention.
• No statistically significant differences in NRT efficacy were observed between sexes at any time point.

Conclusions:

• The findings do not support the hypothesis that nicotine replacement therapy is more therapeutically effective for men than for women.
• NRT appears to be an equally efficacious smoking cessation tool for both sexes.
• Further research may explore other factors influencing cessation success rates in women.