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Table 5 Estimates of prevalence, intraclass correlation coefficients, their respective 95% CI, design effect and mean cluster size with respect to the variables related to structure

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

Variable

P (%)

ICC

95% CI for ICC

DEFF

na

· Delay related to service or healthcare system

15.6

0.247

0.108−0.387

106.64

328

· Lack of medication

1.3

0.021

0.005–0.038

9.77

328

· Difficulties with municipal/hospital transport

1.3

0.031

0.007–0.055

9.27

328

· Difficulties with communication (hospital/central regulation)

8.8

0.206

0.083–0.329

99.07

328

· Lack of blood derivatives

0.6

0.014

0.002–0.025

8.17

328

· Difficulty related to monitoring (intensive care unit)

4.6

0.230

0.097–0.363

64.99

328

· Lack of trained personnel

3.1

0.063

0.018–0.107

24.25

328

· Difficulty related to access to prenatal care

1.4

0.084

0.025–0.142

20.09

328

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