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. 2020 Nov 24;10(11):e037726. doi: 10.1136/bmjopen-2020-037726

Table 4.

HRs and 95% CIs for the association between morbidity before and after the first birth and new SA in the second and third year after T0 in women who had at least one childbirth (n=38 413)*

Morbidity† HRs and 95% CIs
SA in Y+2 to Y+3 (regardless of the number of days) Long-term SA (>90 days) in Y+2 to Y+3
N/Outcome Crude Model 1‡ N/Outcome Crude Model 1‡
No morbidity during Y−3 to Y−1 or Y+1§ 19 531/3825 * * 19 531/742 * *
Morbidity during Y−3 to Y−1 but not during Y+1§ 17 841/4463 1.33 (1.28 to 1.39) 1.34 (1.28 to 1.40) 17 841/1060 1.59 (1.44 to 1.74) 1.57 (1.42 to 1.72)
No morbidity during Y−3 to Y−1 but during Y+1§ 373/123 1.95 (1.63 to 2.34) 1.96 (1.64 to 2.35) 373/51 3.91 (2.94 to 5.19) 3.84 (2.89 to 5.09)
Morbidity both during Y−3 to Y−1 and Y+1§ 668/263 2.50 (2.21 to 2.83) 2.57 (2.27 to 2.91) 668/97 4.19 (3.39 to 5.18) 4.09 (3.31 to 5.06)

T0=delivery date or equivalent; Y+2=2 years after delivery; Y+3=3 years after delivery; Y−3=3 years before delivery; Y−1=1 year before delivery; Y+1=1 year after delivery.

*Women on DP at baseline were excluded.

†Morbidity: measured by hospitalisation and specialised outpatient visit.

‡Model 1: adjusted for age, education, country of birth and type of living area.

§Diagnoses O00-O99 and Z30-Z39 were excluded.

DP, disability pension; SA, sickness absence.