“…Individual and spousal characteristics and household factors were selected a priori and included spousal work exit, gender, both spouses' age, their age difference, education, and educational differences, household income, and number of children (all from registry data) as well as individual' reports of satisfaction with work, means of living, marital quality and housework task sharing, importance placed on family, general happiness with life, recent changes in work ability and enjoyment, work-related factors such as the importance placed on work, the type, intensity and flexibility of the work, whether the position was fixed or temporary as well as general health status and spouse's health or care needs (all from interview, see Table 4 in Slagsvold et al (2012) for details). Age, year, and spouses' work exits were included as time-dependent covariates.…”