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Table 4 Estimated risk of severe maternal outcome (SMO) among women with severe respiratory disease or other causes of severe maternal morbidity according to sociodemographic and obstetric characteristics, medical history and delay in care

From: Severe maternal morbidity due to respiratory disease and impact of 2009 H1N1 influenza A pandemic in Brazil: results from a national multicenter cross-sectional study

Variables

Respiratory

PR

95 % CI*

Other causes

PR

95 % CI*

SMO

PLTC

SMO

PLTC

Age (years)

        

  ≤ 19

59

33

1.11

0.90–1.38

80

1541

0.73

0.59–0.89

 20–34

176

130

1.00

 

401

5513

1.00

 

  ≥ 35

57

30

1.14

0.97–1.34

137

1398

1.32

1.05–1.64

Marital statusa

        

 With partner

152

100

1.00

 

317

3704

1.00

 

 Without partner

84

57

0.99

0.76–1.28

159

3466

0.56

0.40–0.78

Educationb

        

 Elementary

91

62

1.00

 

192

2871

1.00

 

  > Elementary

89

62

0.99

0.77–1.28

188

3368

0.84

0.66–1.08

Skin Colorc

        

 White

133

112

1.00

 

247

2539

1.00

 

 Non white

115

62

1.20

1.01–1.41

229

3702

0.66

0.43–1.01

Number of pregnanciesd

        

 1

117

65

1.12

0.92–1.38

194

3599

0.65

0.56–0.75

 2 or more

170

127

1.00

 

411

4810

1.00

 

Number of childbirthsd

        

 0

132

74

1.00

 

210

4160

1.00

 

 1 or more

155

118

0.89

0.73–1.08

395

4249

1.77

1.55–2.02

Previous C-sectionse

        

 0

217

129

1.00

 

402

6363

1.00

 

 1 or more

61

63

0.78

0.59–1.04

184

1940

1.46

1.22–1.74

Medical historyf

        

 Chronic hypertension

30

17

1.11

0.88–1.41

84

1325

0.90

0.66–1.23

 Diabetes

12

3

1.39

1.04–1.86

21

173

1.69

0.94–3.07

 Smoking

21

23

0.80

0.58–1.12

32

390

1.18

0.68–2.04

 Obesity

39

36

0.88

0.68–1.12

66

1848

0.46

0.30–0.70

 Low weight

5

0

1.73

1.33–2.27

1

21

0.70

0.09–5.30

 Respiratory disease

26

31

0.76

0.48–1.20

11

166

0.96

0.62–1.46

 HIV/AIDS

9

9

0.85

0.51–1.44

6

67

1.27

0.56–2.88

 Substance abuse

14

4

1.36

1.06–1.74

11

71

2.09

1.20–3.63

Prenatal coverageg

        

 Public

206

134

1.00

 

430

5890

1.00

 

 Other

34

15

1.15

0.85–1.54

69

746

1.24

0.82–1.88

Prenatal adequacyh

        

 No

56

36

1.00

0.81–1.22

109

1925

0.75

0.60–0.94

 Yes

212

135

1.00

 

476

6197

1.00

 

Hospitalization coveragei

       

 Public

285

187

1.00

 

602

8366

1.00

 

 Other

6

6

0.83

0.44–1.54

16

78

2.54

1.43–4.50

Gestational age at hospital admissionj

        

  < 22

36

42

0.72

0.50–1.02

47

406

3.36

1.77–6.37

 22–36

161

117

0.90

0.69–1.17

297

3604

2.47

1.70–3.58

  ≥ 37

38

21

1.00

 

125

3926

1.00

 

 Postpartum

51

12

1.26

0.97–1.63

124

290

9.71

6.20–15.20

Delays

        

 Women/family membersk

124

53

1.42

1.11–1.82

218

2902

1.14

0.89–1.44

 Health servicel

109

12

1.85

1.36–2.51

166

1089

2.35

1.66–3.33

 Health professionalm

112

9

1.93

1.47–2.55

167

1260

2.07

1.41–3.04

 Any delaysn

213

63

2.39

1.60–3.56

367

4044

1.74

1.36–2.24

  1. SMO severe maternal outcome (maternal near miss plus maternal death); PLTC potentially life-threatening condition; PR prevalence ratio adjusted for cluster design effect; CI confidence interval; ICU intensive care unit
  2. Values in bold mean that they are statistically significant (p < 0.05)
  3. Missing information for: a 92 and 1424 (respiratory and other causes); b 181 and 2451; c 63 and 2353; d 6 and 56; e 15 and 181; f 43 and 1271; g 96 and 1935; h 46 and 363; i 1 and 8; j 7 and 251; k 71 and 1104; l 15 and 692; m 17 and 607; n 39 and 800 cases
  4. *Adjusted for design effect of cluster sampling
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BMC Infectious Diseases

ISSN: 1471-2334

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