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Table 1 List of questions and answers in the questionnaire

From: Paternal postnatal depression in Japan: an investigation of correlated factors including relationship with a partner

Question items Response options
Demographic characteristics  
Age Age at last birthday (years)
Educational level University graduate or higher. No = 0, Yes = 1
Employment status Full-time = 0, part-time or unemployed = 1
Health status  
Current illness Father was asked whether he has any illness including psychiatric disorders.
Psychotropic drugs Father was asked whether he takes any drugs for mental illness. Choices were as follows; antidepressants, anti-anxiety agents, mood-stabilizing agents, and sleeping pills
Psychological factors  
Experience of mental problems Father has experience of visiting a medical institution due to a mental health problem. No = 0, Yes = 1
Life events Whether a family member or close friend died or suffered a serious injury or accident in the previous 1 year. No events = 0, one or more events = 1
Economic anxiety Father has anxiety about the family budget. No = 0, Yes = 1
Pregnancy, childbirth, and engaging with the child
Timing of pregnancy Pregnancy after marriage = 0, Pregnancy before marriage = 1
Planning of pregnancy Unexpected pregnancy. No = 0, Yes = 1,
Conception method Pregnancy with infertility treatment. No = 0, Yes = 1
Order of birth Second child or more = 0, First child = 1
Number of children in this pregnancya Single birth = 0, Multiple birth = 1
Gestational agea Gestational week at delivery
Health status of childa Child has a health problem. No = 0, Yes = 1
Living with partner Partner staying at her parent’s house. Yes = 0, No = 1
Partner’s depression (EPDS)a Ten items measuring symptoms of anxiety and depression in the last 7 days. 8 or Higher score indicate depression. No depression = 0, Depression = 1
Marital relationship satisfaction (QMI) Six items measuring marital relationship satisfaction. Higher scores indicated higher relationship satisfaction.
  1. aData were collected from mothers using self-complete questionnaires