The validity of a short questionnaire on fertility problems was tested on a group of 151
moderately educated women who had participated in a prospective study on early
pregnancy failure some years before. Part of this group was approached by a personal
interview, another part by telephone interviews and a third part was sent a questionnaire by
mail. Reliability was tested on another population of 89 women with at least one child. The
questionnaire was presented to these women twice with an interval of 3–5 weeks. The …