Association between first birth caesarean delivery and adverse maternal-perinatal outcomes in the second pregnancy: a registry-based study in Northern Tanzania

Table 4 Association between first birth caesarean delivery and adverse perinatal outcomes in the second pregnancy (N = 5948)

Adverse outcomes	^hWomen with first birth SVD (n = 4367	Women with first birth CD (n = 1581)	CRR(95%CI)	ARR(95%CI)
Preterm birth	959(22.0)	394(24.9)	1.18(1.03–1.34)	1.21(1.05–1.38)^a
Neonatal unit admission	650(14.9)	219(13.9)	0.92(0.77–1.08)	0.90(0.74–1.09)^b
Macrosomia	257(5.9)	72(4.6)	0.76(0.58–0.99)	0.72(0.55–0.95)^c
Low birth weight	417(9.5)	165(10.4)	1.10(0.91–1.33)	0.96(0.78–1.18)^d
Low Apgar score in 5 min (n = 5771)	89(2.1)	36(2.3)	1.12(0.75–1.65)	1.06(0.71–1.58)^e
Still birth	128(2.9)	49(3.1)	1.06(0.75–1.47)	0.95(0.67–1.36)^f
Neonatal death in 24 h	35(0.8)	20(1.3)	1.58(0.91–2.75)	1.72(0.73–4.03)^g

CRR Crude Relative Risk, ARR Adjusted Relative Risk, CI Confidence Interval
^aadjusted by the current preeclampsia GDM Macrosomia, LBW, and previous preterm
^badjust by Preeclampsia, GDM, Macrosomia, LBW, Apgar score in 5 and Preterm
^cadjusted by macrosomia in the first birth, pre/eclampsia, GDM, stillbirth, and preterm in the second birth
^dadjusted by LBW in the first birth, pre/eclampsia, GDM, and Preterm in the second birth
^eadjusted by preeclampsia, GDM, LBW, Preterm, abruption placenta in the second birth
^fadjusted by stillbirth in the first birth, preeclampsia, GDM,, Macrosomia, Preterm and abruption placenta in the second birth
^gadjusted by preeclampsia, GDM, macrosomia, LBW, Apgar score in 5 Preterm, and Abruption placenta in the second birth
^hReference group

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