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Table 1 Data collection tools used in the two original studies

From: Social and economic development and pregnancy mental health: secondary analyses of data from rural Vietnam

VariableMeasure
Symptoms of antenatal common mental disorders (CMDs)- Edinburgh Postnatal Depression Scale – Vietnam validation (EPDS-V) [25]
- Ten items each scored on a Likert scale from 0 to 3, total score ranges from 0 to 30
- Translated, culturally verified and formally validated in Vietnam, against psychiatrist-administered structured clinical interviews, cut-off score of 3/4 [26]
Mental health history- Study-specific question: history of mental health problems
Intimate relationships- Intimate Bonds Measure – Vietnam validation (IBM-V) [27]
- Perceived aspects of an intimate relationship: care and control (two subscales)
- 24 items each scored on a Likert scale from 0 to 3, scores from the 12 questions in each subscale added together to produce subscale scores
- Translated, culturally verified and formally validated in Vietnam, against local indicators of quality of intimate relationships, reports of emotional and physical intimate partner abuse and indictors of CMDs [28]
Experiences of interpersonal violence- Study-specific questions: fear of family members
Household Wealth Index- Following World Bank Method [29]
- Questions assessing roof material, floor material, type of latrine, cooking material and household assets (motorbike, coloured TV, video or DVD player, landline or mobile phone, refrigerator, air conditioner, water heater, washing machine and computer)
Poor household status- Study-specific question: recognition as a poor household by the government
Reproductive history- Study-specific questions: age at first pregnancy, gravidity, parity, abortion history and previous child deaths
Current pregnancy- Study-specific questions: knowledge of foetal sex, whether or not the pregnancy was welcome, illness during pregnancy, use of recommended iodised salt and iron supplements and breastfeeding intentions
Demographic characteristics- Age, education, occupation, income and marital status
Current life adversity- Study-specific question: current stressful or adverse life events