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Table 3 Load of engagement in productive activities, mental health, and quality of life: adjusted coefficients and its 95% confidence intervals (CI) from tobit regressions for men (n = 818) and women (n = 305)

From: Productive activities, mental health and quality of life in disability: exploring the role enhancement and the role strain hypotheses

  Men Women
  Metal health Quality of life Metal health Quality of life
  Coeff (95% CI) Coeff (95% CI) Coeff (95% CI) Coeff (95% CI)
Total productivity load
 Lowest quartile Reference Reference Reference Reference
 2nd quartile 5.56 (1.67–9.46) 1.15 (0.42–1.87) 9.32 (3.21–15.43) 2.15 (0.96–3.33)
 3rd quartile 5.45 (1.69–9.20) 1.69 (0.98–2.41) 6.10 (−0.48–12.68) 1.94 (0.59–3.28)
 Highest quartile 6.99 (2.38–11.60) 2.25 (1.34–3.17) 5.45 (−2.18–13.08) 2.34 (0.96–3.72)
p 0.010 < 0.001 0.029 0.002
Paid work (h/week)
 None Reference Reference Reference Reference
 1–16 4.32 (0.51–8.13) 1.19 (0.50–1.89) −2.0 (−8.27–3.47) 0.20 (−0.87–1.28)
  > 16 6.06 (2.68–9.44) 1.85 (1.17–2.53) 3.91 (−2.40–10.22) 0.70 (− 0.57–1.96)
p 0.002 < 0.001 0.164 0.556
Volunteering (h/week)
 None Reference Reference Reference Reference
 1–8 3.85 (1.25–6.46) 0.49 (−0.03–1.01) 6.09 (1.64–10.55) 1.50 (0.59–2.40)
  > 8 0.05 (−4.74–4.85) 0.26 (− 0.59–1.11) 5.48 (− 1.65–12.61) 1.48 (− 0.17–3.12)
p 0.009 0.177 0.021 0.004
Education (h/week)
 None Reference Reference Reference Reference
 1–8 1.09 (−1.83–4.01) 0.18 (−0.41–0.76) 0.56 (−5.12–6.24) 1.28 (0.10–2.45)
  > 8 −0.71 (−7.10–5.67) 0.43 (− 0.88–1.75) 4.42 (−4.80–13.63) 2.11 (0.05–4.18)
p 0.732 0.714 0.641 0.024
Housework (h/week)
 None Reference Reference Reference Reference
 1–8 1.91 (−2.91–6.73) 0.44 (−0.33–1.21) 2.30 (−8.21–12.82) 0.50 (− 2.10–3.10)
  > 8 0.78 (−4.40–5.96) 0.33 (− 0.52–1.19) 0.36 (− 9.84–10.57) 0.93 (− 1.61–3.47)
p 0.579 0.536 0.567 0.576
  1. p-values from equal Fraction Missing Information (FMI) test. Note: Confounders imputed by multiple imputation, results weighted for unit non-response. Models are adjusted for age, receipt of disability pension, partnership, years of education, lesion severity, time since injury, aetiology, and functional independence. Models on paid work, volunteering, education, and housework are mutually controlled for each other