Knowledge About Crying, Sleeping, and Feeding
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A multiple-choice test on crying, sleeping, and feeding (self-developed and based on the contents of the app) assessed the parents’ level of knowledge at t1 and t2 using 18 questions with 4 answer options, of which one or more were correct. An example item is as follows: “It is natural for children to cry (eg, due to tummy ache). However, at a certain age, the crying frequency decreases in most babies. When does this occur?—after 6 weeks—from 3 months of life—from 6 months of life—from 12 months of life.” The maximum possible score was 72. The internal reliability was acceptable, with a Cronbach In a face validity test, participants rated all items as very suitable or mostly suitable (Table S1 in 