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Table 2 Distribution of women with any severe maternal morbidity by age group according to some characteristics, clinical and obstetric history

From: Severe maternal morbidity and maternal near miss in the extremes of reproductive age: results from a national cross- sectional multicenter study

Characteristics 10 – 19 years p* 20 – 34 years p** 35 – 49 years
Ethnicity (non-white) (n) 60.8 (1,259) 0.022 56.9 (4,675) 0.912 56.7 (1,205)
Schooling (up to primary school) (n) 58.0 (1,275) <0.001 41.6 (4,514) <0.001 52.9 (1,134)
Marital status (No steady partner) (n) 62.3 (1,455) <0.001 45.2 (5,255) <0.001 36.6 (1,329)
BMI (n) (630) <0.001 (2,600) 0.014 (704)
 Low weight 30.0 13.4 9.8
 Adequate 33.8 27.1 24.9
 Overweight 19.5 27.7 28.4
 Obesity 16.7 31.8 36.9
Previous condition& (n) 29.3 (1,446) <0.001 49.6 (5,363) <0.001 66.1 (1,432)
 Hypertension 3.5 <0.001 16.7 <0.001 35.4
 Diabetes mellitus 0.6 <0.001 2.2 <0.001 5.7
 Cardiac 2.1 0.287 2.7 <0.001 4.7
 Thyroid disease 0.6 0.028 1.3 0.010 2.8
 Respiratory 3.1 0.458 2.8 0.776 2.7
 Nephropathy 0.6 0.061 1.4 0.906 1.4
 Thalassemia/sickle cell anemia 0.6 0.148 1.0 0.012 0.3
 Collagenosis 0.4 0.539 0.6 0.508 0.5
 Neoplasms 0.1 0.119 0.3 0.641 0.4
 HIV/AIDS 0.3 <0.001 1.3 0.973 1.3
 Low weight 1.0 <0.001 0.2 0.794 0.1
 Obesity 12.9 <0.001 25.8 0.033 29.2
 Smoking 3.9 0.013 5.9 0.599 6.4
 Drug addiction 0.9 0.153 1.3 0.934 1.3
 Other 3.4 0.100 4.9 0.003 8.3
Parity (n) (1,707) <0.001 (6,171) <0.001 (1,615)
 0 88.2 44.8 18.8
 1–2 11.4 43.4 47.8
 ≥3 0.4 11.7 33.4
Previous abortion 7.3 (1,707) <0.001 22.5 (6,169) <0.001 37.6 (1,615)
Previous Cesarean section 5.6 (1,703) <0.001 25.9 (6,084) <0.001 36.8 (1,572)
Number of prenatal visits (1,334) <0.001 (4,863) 0.086 (1,260)
 0 5.4   8.6   10.2
 1–5 41.9 37.0 38.5
 ≥6 52.7 54.4 51.3
  1. *p-values for proportions between adolescent and control groups.
  2. **p-values for proportions between older age and control groups.
  3. &previous conditions are not mutually exclusive.
  4. Brazil, 2009-2010.