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Table 4 AQUA cohort attrition between pregnancy questionnaires

From: Study protocol: Asking QUestions about Alcohol in pregnancy (AQUA): a longitudinal cohort study of fetal effects of low to moderate alcohol exposure

Reason for attrition After Q1 After Q2 After Q3 Birth
Dropped-out (loss to follow-up) 383 138   
Withdrew 11 3 3  
Fetal loss 18 2 2  
Administrative reason (e.g. scheduling error) 19 1   
Total n = 586 431 144 5