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Table 3 Estimates of prevalence, intraclass correlation coefficients, their respective 95% CI, design effect and mean cluster size for variables related to outcome

From: Intraclass correlation coefficients in the Brazilian network for surveillance of severe maternal morbidity study

Variable

P (%)

ICC

95% CI for ICC

DEFF

na

· Any hemorrhagic complication

24.8

0.165

0.062−0.268

129.54

354

· Abruptio placentae

5.7

0.016

0.003−0.029

9.55

354

· Placenta previa/acreta

2.2

0.017

0.004−0.031

6.24

354

· Complicated ectopic pregnancy

3.1

0.034

0.009−0.059

17.72

354

· Uterine rupture

0.3

0.005

<0.001−0.011

2.12

354

· Severe post abortion hemorrhage

1.3

0.015

0.003−0.028

5.92

354

· Postpartum hemorrhage

12.5

0.248

0.110−0.387

200.97

354

✓ Atony

63.0

0.375

0.134−0.617

77.37

44

✓ Retained placenta

11.8

0.114

0.005−0.224

12.94

44

✓ Tears

8.8

0.130

0.008−0.251

10.04

44

✓ Coagulopathy

4.6

0.102

0.002−0.203

13.51

44

✓ Uterine inversion

0.6

0.035

<0.001−0.079

1.65

44

✓ Other obstetric cause

11.2

0.370

0.130−0.610

43.77

44

· Other severe hemorrhage

1.0

0.023

0.005−0.041

6.16

354

· Any complication due to hypertension

70.2

0.183

0.072−0.294

124.72

354

· Severe preeclampsia

51.2

0.231

0.099−0.363

188.23

354

· Eclampsia

4.5

0.023

0.005−0.040

14.62

354

· Severe hypertension

18.3

0.334

0.169−0.499

289.00

354

· HELLP syndrome

6.2

0.028

0.007−0.049

15.43

354

· Acute fatty liver

0.2

0.005

0.001−0.010

1.59

354

· Any other complication

17.2

0.103

0.034−0.172

31.93

354

· Pulmonary edema

1.7

0.020

0.004−0.036

4.45

354

· Seizures

1.4

0.009

0.001−0.016

3.66

354

· Thrombocytopenia

3.9

0.022

0.005−0.039

6.77

354

· Thyrotoxic crises

0.1

0.007

0.001−0.013

1.55

354

· Shock

3.1

0.034

0.009−0.059

9.95

354

· Acute respiratory failure

4.0

0.051

0.014−0.087

19.37

354

· Acidosis

1.6

0.021

0.005−0.038

12.54

354

· Cardiopathy

1.7

0.013

0.002−0.023

5.71

354

· Stroke

0.2

0.001

0.001−0.003

1.10

354

· Coagulation defects

2.0

0.012

0.002−0.021

4.69

354

· Disseminated intravascular coagulation

0.6

0.012

0.002−0.021

2.60

354

· Thromboembolism

0.9

0.010

0.001−0.018

4.95

354

· Diabetic ketoacidosis

0.2

0.004

0.001−0.008

0.94

354

· Jaundice/liver dysfunction

1.4

0.014

0.003−0.026

2.46

354

· Meningitis

<0.1

<0.001

0.001−0.002

0.94

354

· Severe sepsis

3.5

0.064

0.019−0.109

18.09

354

✓ Postpartum endometritis

19.5

0.131

0.011−0.252

3.95

13

✓ Post abortion endometritis

11.0

0.043

0.001−0.115

2.13

13

✓ Pulmonary focus

29.3

0.055

0.001−0.133

2.03

13

✓ Urinary focus

25.0

0.013

0.001−0.067

1.08

13

✓Other

15.2

0.042

0.001−0.113

1.15

13

· Acute renal failure

2.2

0.027

0.006−0.047

8.68

354

· Complication possibly associated with Influenza A ‘H1N1’

2.2

0.056

0.016−0.097

20.62

354

· Any clinical maternal near miss criteria

5.5

0.037

0.010−0.065

15.44

354

· Cyanosis

1.3

0.023

0.005−0.040

12.63

354

· Gasping

0.4

0.009

0.001−0.017

4.21

354

· Respiratory rate <6 or RR>40

2.0

0.016

0.003−0.029

8.42

354

· Shock

2.6

0.031

0.008−0.054

9.24

354

· Oliguria unresponsive to fluids or diuretics

0.9

0.010

0.001−0.018

4.43

354

· Coagulation problems

1.0

0.012

0.002−0.021

4.88

354

· Loss of consciousness for 12h or more

0.7

0.005

<0.001−0.010

4.25

354

· Absence of consciousness and absence of pulse rate/heartbeat

0.7

0.006

0.001−0.011

4.96

354

· Stroke

0.3

0.002

0.001−0.005

1.16

354

· Uncontrolled seizures – total paralysis

0.2

0.001

<0.001−0.004

2.22

354

· Jaundice in presence of preeclampsia

0.3

0.001

<0.001−0.002

1.36

354

· Any laboratory near miss criteria

5.2

0.047

0.013−0.082

12.08

354

· O2 saturation < 90% for longer than 60 min

1.9

0.016

0.003−0.029

8.30

354

· PaO2/FiO2 < 200 (Yes/No)

1.1

0.015

0.003−0.028

8.37

354

· Creatinine ≥ 300 mmol/l or ≥ 3.5 mg/dl

1.0

0.007

0.001−0.013

3.03

354

· Bilirubin ≥ 100 mmol/l or ≥ 6 mg/dl

0.5

<0.001

<0.001−0.002

1.25

354

· pH < 7.1

0.8

0.009

0.001−0.016

5.32

354

· Lactate > 5

0.8

0.098

0.032−0.165

18.31

354

· Platelet < 50,000

2.1

0.025

0.006−0.044

5.32

354

· Absence of consciousness plus glucose and ketoacids in urine

0.2

0.004

<0.001−0.009

3.49

354

· Condition of woman at discharge (Medical discharge)

94.1

0.011

0.002–0.020

6.54

354

· Unsafe abortion

0.6

0.025

0.006–0.045

7.43

310

· Maternal Death

1.5

0.018

0.004−0.033

7.93

354

· Maternal Death + NM

9.5

0.077

0.023−0.130

21.09

354

  1. P: Prevalence of each category; ICC: Intraclass Correlation Coefficient; 95% CI: 95% confidence interval; DEFF: Design effect; na: Mean cluster size; NM: Near miss.