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Table 4 Within-twin pair associations between education, income, and sick leave (SL)

From: Socioeconomic status and sick leave granted for mental and somatic disorders: a prospective study of young adult twins

   Dizygotic pairs All twin pairs Monozygotic pairs
   b (95% C.I.) b (95% C.I.) b (95% C.I.)
SL somatic Education −0.38 (−0.71, −0.05) −0.21 (−0.48, 0.05) 0.21 (−0.21, 0.63)
  Income 0.05 (−0.22, 0.31) 0.09 (−0.11, 0.30) 0.19 (−0.10, 0.48)
SL mental Education −0.06 (−0.25, 0.14) −0.08 (−0.24, 0.08) −0.14 (−0.43, 0.15)
  Income −0.09 (−0.25, 0.07) −0.06 (−0.18, 0.05) −0.02 (−0.18, 0.14)
SL any Education −0.56 (−0.94, −0.19) −0.35 (−0.68, −0.03) 0.19 (−0.37, 0.75)
  Income 0.00 (−0.30, 0.30) 0.09 (−0.15, 0.33) 0.30 (−0.07, 0.66)
N pairs 1187   2024   837  
  1. SL granted for somatic, mental, and any disorder. Increase or reduction of sick leave in percentage points per unit increase in education or income.
  2. Notes: Bold values signify p < 0.05; Income and education were analyzed jointly, and results adjusted for sex and birth year.