Table 3.

The 10 most frequent diagnoses of the first-time mothers during the on-going pregnancy between the IA and non-IA groups

Diagnosis according to ICD-10	IA group		Non-IA group		P-value	P-value
	Frequency	%	Frequency	%	Chi-square	Adjusted model	OR	95 % CI
O13 Gestational hypertension without significant proteinuria	213	4.12	1,982	3.79	0.2406	0.3845	1.07	0.92–1.24
O14.0 Mild to moderate preeclampsia	79	1.53	856	1.64	0.5524	0.5554	0.93	0.74–1.18
O14.0/1/9 All types of preeclampsia	135	2.61	1,458	2.79	0.4567	0.5444	0.95	0.79–1.13
O24.4 Gestational diabetes mellitus	285	5.52	2,409	4.61	0.0034	0.1418	1.10	0.97–1.26
O24.9 Unspecified diabetes mellitus in pregnancy, childbirth and the puerperium	69	1.34	616	1.18	0.3239	0.8954	1.02	0.79–1.31
O30.0 Multiple gestation	66	1.28	683	1.31	0.8556	0.9129	1.02	0.78–1.31
O32.1 Maternal care for breech presentation	146	2.83	1,654	3.17	0.1802	0.3821	0.93	0.78–1.10
O36.5 Maternal care for known or suspected poor fetal growth	78	1.51	791	1.51	0.9793	0.2455	0.87	0.68–1.10
O42.9 Premature rupture of membranes, unspecified as to length of time between rupture and onset of labour	90	1.74	935	1.79	0.8036	0.5134	1.08	0.86–1.34
O47.0 False labour before 37 completed weeks of gestation	155	3.00	1,427	2.73	0.2614	0.2103	1.12	0.94–1.32
O48 Late pregnancy	72	1.39	694	1.33	0.6979	0.6831	1.05	0.82–1.35

Statistically significant differences indicated with bolded p-values