The BABITT questionnaire for evaluation of bowel and bladder function in children who are introduced to assisted infant toilet training - content validity and feasibility.

Abstract

A web-based questionnaire was developed in three consecutive steps. In Step 1, the questionnaire was outlined based on literature review and expert panel discussions. In Step 2, the questionnaire was validated for relevance and simplicity by content validity index (CVI) using 4-point Likert scales. With dichotomized data, an index level ≥ 0.78 was considered as acceptable. In Step 3, the respondent burden was analysed and a pilot phase allowed for evaluation of feasibility in the clinical study setting. In Step 1, the Rome IV criteria and ICCS frameworks were selected for items comprising the primary outcomes in the BABITT study. After the final assessment round in Step 2, the item-level content validity index (I-CVI) was excellent, ranging from 0.88 to 1.00 in most items, in all domains, for both relevance and simplicity. In the pilot phase Step 3, the response rate was 95% and the parents' acceptance of replying to the questionnaire was satisfactory. A web-based questionnaire was developed to evaluate parent-reported bladder and bowel function in children who are introduced to assisted infant toilet training. The BABITT questionnaire emerged as valid and feasible in its context.