Measuring maternal mental health using the Dutch Four-Dimensional Symptom Questionnaire (4DSQ): Pregnancy-related item bias across the perinatal period.

Objective: the Four-Dimensional Symptom Questionnaire (4DSQ) measures four dimensions of common psychopathology: distress, depression, anxiety and somatization. The instrument is developed and validated for general practice. A previous validation study of the 4DSQ for midwifery practice indicated that pregnant women respond differently to the items of the 4DSQ.

Assessing psychological health in midwifery practice: a validation study of the Four-Dimensional Symptom Questionnaire (4DSQ), a Dutch primary care instrument.

Objective: the Four-Dimensional Symptom Questionnaire (4DSQ) is a validated self-report questionnaire, developed for general practice to assess the level of distress, somatization, depression and anxiety among patients. This study evaluated the validity of this instrument for midwifery practice by differential item functioning analysis.

Design: cross-sectional.