Table 3. Distribution of maternal morbidity cases according to severity subgroup and pregnancy-related healthcare factors (n = 121). São Luís, Maranhão, 2009.

	Other severe morbidity		Extremely severe morbidity		P-value
	n	%	n	%
First pregnancy during adolescence					0.08*
Yes	39	41.9	17	60.7
No	54	58.1	11	39.3
Previous hypertension					0.02†
Yes	16	17.2	0	0.0
No	77	82.8	28	100.0
Number of pregnancies					0.86*
1	33	35.5	11	39.3
2-3	39	41.9	12	42.9
≥ 4	21	22.6	5	17.8
Planned pregnancy					0.90*
Yes	21	22.6	6	21.4
No	72	77.4	22	78.6
Prenatal care					0.43†
Yes	87	93.5	25	89.3
No	6	6.5	3	10.7
Numbers of prenatal consultations*					0.09†
0-1	8	8.6	3	10.7
2-3	10	10.8	7	25.0
4-5	36	38.7	6	21.4
6-7	25	26.9	9	32.1
≥ 8	14	15.0	2	7.1
No response				3.6
Hypertension during pregnancy					0.09†
Yes	36	38.7	5	17.9
No	51	54.8	20	71.4
No prenatal assistance	6	6.5	3	10.7
Previous abortion					0.44*
Yes	34	36.6	8	28.6
No	59	63.4	20	71.4
All prenatal procedures‡					0.45*
Yes	21	22.6	5	17.8
No	71	76.3	22	78.6
No response	1	1.1	1	3.6
Referral to high-risk prenatal care					0.59†
Yes	34	36.6	8	28.6
No	53	57.0	17	60.7
No prenatal assistance	6	6.4	3	10.7
Severe morbidity at first admission					0.13*
Yes	70	75.3	17	60.7
No	23	24.7	11	39.3
Admission to ICU					< 0.001†
Yes	0	0.0	16	57.1
No	93	0.0	12	42.9
Prenatal record available					0.05*
Yes	65	69.9	14	50
No	28	30.1	14	50

^*Pearson χ²;

^†Fisher's exact test;

^‡The procedures evaluated were: blood and urine laboratory tests, ultrasound, anti-tetanus vaccine and taking part in educational activities.