The "sample comprised 22 studies, 36 measures of effect and 877 181 participants (163 831 experienced an abortion)." The abstract of the study reports:
Women who had undergone an abortion experienced an 81% increased risk of mental health problems, and nearly 10% of the incidence of mental health problems was shown to be attributable to abortion. The strongest subgroup estimates of increased risk occurred when abortion was compared with term pregnancy and when the outcomes pertained to substance use and suicidal behaviour.
