“…In addition to age (50-59, 60-69, 70 + years) and gender, variables summarized by Lee and Mercurio-Riley [38] in their conceptual framework of factors previously found to be associated with psychosocial adjustment to chronic pain (mainly originating in musculoskeletal pain), were selected according to availability, parsimony and interpretability. Selected groups of factors included: pain condition (number of pain sites recorded on a full body manikin (range 0-44) [37]), functional dependence (pain interference with social, daily and work activities (average score, range 0-10 each) [67]) and stress processing factors (coping by catastrophizing, increased behavioral activities, self-statements, and ignoring pain (highest tertile vs. lowest tertile (range 0-6) [30]). Finally, the following socio-ecological factors were included: living arrangements (living alone vs. not living alone); marital status (married/cohabiting vs. single/divorced/widowed); availability of emotional and instrumental support (yes/no need vs. no each) and current or previous occupation grouped into socioeconomic classes based on the National Statistics Socio-Economic Classification (NS-SEC; manual/routine vs. managerial or professional/intermediate/ other [61]).…”