Table 3. Severe complications and underlying causes in the study population.

Severe complications and underlying causes*	PLTC n = 180	SMO n = 153	MNM n = 142	MDs n = 11	p-value†	MI (%)
Hypertensive disorders	73 (40.5)	64	58 (40.8)	6 (54.5)	0.528	9.4
Severe preeclampsia	55 (30.5)	46	42 (29.5)	4 (36.3)	0.735	8.7
Eclampsia	18 (10.0)	18	16 (11.2)	2 (18.1)	0.620	11.1
Obstetric hemorrhage**	62 (34.4)	53	50 (35.2)	3 (27.2)	0.749	5.6
Severe postpartum hemorrhage	54 (30.0)	47	44 (30.9)	3 (27.2)	1.000	6.3
Severe complications of abruption	12 (6.6)	12	11 (7.7)	1 (9.0)	1.000	8.3
Severe complications of placenta previa	9 (5.0)	7	6 (4.2)	1 (9.0)	0.413	14.2
Ruptured uterus	6 (3.3)	6	5 (3.5)	1 (9.0)	0.366	16.7
Sepsis or severe systemic infection	14 (7.7)	12	11 (7.7)	1 (9.0)	1.000	8.3
Severe complications of abortion	11 (6.1)	8	8 (5.6)	0 (0.0)	1.000	0.0
Severe complications of ectopic	14 (7.7)	12	12 (8.4)	0 (0.0)	0.603	0.0
Medical/surgical/mental diseases or complications	3 (1.6)	3	3 (2.1)	0 (0.0)	1.000	0.0
Unanticipated complications of management	12 (6.6)	12	10 (7.0)	2 (18.1)	0.208	16.7
Other complications associated with SMO††	4 (2.2)	2	2 (1.4)	0(0.0)	1.000	0.0
Coincidental conditions	2 (1.1)	1	1 (0.7)	0(0.0)	1.000	0.0
Unknown causes	5 (2.7)	5	4 (2.8)	1 (9.0)	0.315	20.0

Data given as n(%).

PLTC: potentially life-threatening condition; SMO: severe maternal outcome; MNM: maternal near-miss; MD: maternal death; IM: mortality index.

*More than one severe complication or underlying cause was detected.

**Including severe complications of PPH, abruption and placenta previa.

^†MNMs and MDs comparison.^††Obstetric, medical, and surgical complications other than the above (e.g., diabetes mellitus and pulmonary embolism).