After controlling for potential confounders, lifetime hospitalization due to pesticide poisoning showed a 2.48-fold increase in risk (95% CI: 1.26, 4.91). Those with multiple poisonings showed more significant associations with suicidal ideation (OR¼2.33 for once, OR¼3.02 for more than once). Moderate- or severe-symptom severity of acute pesticide poisoning cases (OR¼2.23; 95% CI: 1.21–4.11) also showed increased risks of suicidal ideation than the milder classes did. However, no significant association was identified with cumulative lifetime pesticide application and suicidal ideation