Figure 2
From: Ibuprofen 400 mg is effective in women, and women are well represented in trials

Proportion of patients with at least 50% pain relief with placebo according to the percentage of women in the trial. Scatter plot showing the proportion of patients with at least 50% pain relief over 4–6 hours following a single dose of placebo in relation to the percentage of women participating in individual published clinical trials included in the meta-analysis.