Table 9.
Estimates of prevalence (P), intracluster correlation coefficients (ICC), their respective 95% CI, design effect (Deff), and mean cluster size (n a ) for categorical management variables in spontaneous labor conditions or preterm due to pPROM
| Variable | P(%) | ICC | 95% CI for ICC | Deff | n a |
|---|---|---|---|---|---|
|
Preterm birth due to spontaneous labor: |
|
|
|
|
|
| Use of corticosteroids |
28.5 |
0.032 |
0.002-0.062 |
5.2 |
73 |
| Corticosteroids (betamethasone) |
86.4 |
0.851 |
0.754-0.948 |
18.8 |
21 |
| Use of tocolytic agents |
23.6 |
0.068 |
0.015-0.121 |
8.7 |
72 |
| Association of tocolytic agents |
9.9 |
0.368 |
0.167-0.570 |
8.4 |
17 |
| Therapeutic failure of tocolysis |
11.4 |
0.165 |
0.029-0.301 |
4.3 |
17 |
| Use of magnesium sulphate (neuroprotection) |
3.9 |
0.070 |
0.016-0.125 |
9.3 |
70 |
| Use of antibiotics |
42.8 |
0.262 |
0.117-0.407 |
28.8 |
72 |
| Intravenous antibiotic |
93.3 |
0.321 |
0.127-0.515 |
10.1 |
31 |
| Association of antibiotic |
15.3 |
0.144 |
0.025-0.263 |
12.9 |
30 |
| Group B streptococcus screening |
24.3 |
0.286 |
0.131-0.442 |
26.2 |
65 |
|
Preterm birth due to pPROM: |
|
|
|
|
|
| Use of corticosteroids |
40.5 |
0.042 |
0.002-0.083 |
3.7 |
53 |
| Corticosteroids (betamethasone) |
85.0 |
0.965 |
0.941-0.990 |
23.5 |
21 |
| Use of tocolytic agents |
17.7 |
0.547 |
0.364-0.729 |
38.3 |
56 |
| Use of antibiotics |
78.2 |
0.233 |
0.095-0.371 |
18.3 |
54 |
| Intravenous antibiotic |
91.0 |
0.366 |
0.180-0.552 |
14.4 |
41 |
| Association of antibiotic |
20.9 |
0.245 |
0.093-0.397 |
20.1 |
41 |
| Group B streptococcus screening |
36.3 |
0.441 |
0.260-0.622 |
27.9 |
50 |
| Hydration solution (saline) | 11.0 | 0.419 | 0.235-0.602 | 20.1 | 52 |