Hazard ratios with 95% confidence intervals for estimated associations between birth order and sickness absence, results from Cox regression models stratified by shared mother and father identification.

Hazard ratios with 95% confidence intervals for estimated associations between birth order and sickness absence, results from Cox regression models stratified by shared mother and father identification.</p

Hazard ratios with 95% confidence intervals for estimated associations of birth order and sickness absence by sex, results from Cox regression models stratified by shared mother and father identification.

Hazard ratios with 95% confidence intervals for estimated associations of birth order and sickness absence by sex, results from Cox regression models stratified by shared mother and father identification.</p

Hazard ratios with 95% confidence intervals for estimated associations between birth order and sickness absence, by birth spacing, results from Cox regression models stratified by shared mother and father identification.

(DOCX)</p

Hazard ratios with 95% confidence intervals for estimated associations between birth order and sickness absence- by sibling group size- results from Cox regression models stratified by shared mother and father identification.

(DOCX)</p