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. 2014 Apr 22;14:54. doi: 10.1186/1471-2288-14-54

Table 10.

Estimates of prevalence (P), intracluster correlation coefficients (ICC), their respective 95% CI, design effect (Deff), and mean cluster size (n a ) for diagnosis and management among categorical variables related to therapeutic preterm delivery

Variable P(%) ICC 95% CI for ICC Deff n a
Therapeutic delivery for maternal disease
74.6
0.102
0.032-0.172
9.6
73
Therapeutic delivery for fetal disease
54.1
0.065
0.016-0.115
7.0
73
Maternal disease responsible for interruption of pregnancy:
   ● Diabetes
7.3
0.063
0.011-0.115
5.5
54
   ● Gestational hypertension
12.9
0.144
0.048-0.240
9.4
54
   ● Chronic hypertension
15.3
0.009
<0.001-0.027
1.8
54
   ● Preeclampsia
58.2
0.079
0.017-0.140
5.4
54
   ● Eclampsia
3.2
0.017
<0.001-0.041
1.8
54
   ● HELLP syndrome
9.4
0.012
<0.001-0.031
1.2
54
   ● Abruptio placentae
7.7
0.009
<0.001-0.026
1.6
54
   ● Previous placentae
3.3
0.001
<0.001-0.013
0.8
54
Fetal disease responsible for interruption of pregnancy:
 
 
 
   ● Fetal distress
32.6
0.052
0.010-0.095
6.1
71
   ● Fetal growth restriction
19.8
0.037
0.004-0.069
4.4
71
   ● Malformation
5.2
0.144
0.052-0.236
13.5
71
   ● Other fetal condition
15.1
0.161
0.061-0.262
15.8
71
Exams to evaluate fetal condition:
 
 
 
 
 
   ● Cardiotocography
61.0
0.299
0.148-0.451
23.7
67
   ● Dopplerfluxometry
61.1
0.159
0.059-0.260
14.4
67
   ● Fetal biophysical profile
32.2
0.508
0.331-0.686
43.5
67
   ● Fetal movements control
4.3
0.101
0.030-0.172
12.3
67
   ● Other exam
12.9
0.041
0.005-0.077
4.1
67
Determinant exams for diagnosis:
 
 
 
 
 
   ● Cardiotocography
23.2
0.104
0.032-0.176
10.1
70
   ● Dopplerfluxometry
29.8
0.064
0.014-0.113
6.4
70
   ● Fetal biophysical profile
14.6
0.290
0.142-0.438
24.0
70
   ● Fetal echocardiography
1.2
0.030
0.001-0.058
4.6
70
   ● Maternal hepatic dysfunction
15.9
0.194
0.079-0.308
19.9
70
   ● Maternal hematologic dysfunction
21.0
0.278
0.134-0.423
29.9
70
   ● Other
41.2
0.102
0.031-0.173
10.0
70
Maternal or fetal attempted treatment
57.9
0.056
0.012-0.101
5.7
71
Use of corticosteroids
42.6
0.059
0.012-0.105
6.2
70
Maternal condition at hospital discharge (cured) 24.8 0.153 0.057-0.249 15.7 73