Table 5.
Estimates of prevalence (P), intracluster correlation coefficients (ICC), their respective 95% CI, design effect (Deff), and mean cluster size (n a ) for categorical variables of process during pregnancy
| Variable | P(%) | ICC | 95% CI for ICC | Deff | n a |
|---|---|---|---|---|---|
| Hospitalization |
22.3 |
0.030 |
0.008-0.052 |
10.0 |
265 |
| Reasons for hospitalization: |
|
|
|
|
|
| ● Emesis |
0.6 |
0.006 |
0.001-0.013 |
2.3 |
264 |
| ● Uterine contraction |
5.7 |
0.014 |
0.002-0.026 |
5.3 |
264 |
| ● Amniorrhexis |
2.2 |
0.009 |
0.001-0.017 |
4.0 |
264 |
| ● Bleeding |
2.6 |
0.008 |
<0.001-0.016 |
3.0 |
264 |
| ● Maternal disease |
8.9 |
0.029 |
0.007-0.050 |
10.1 |
264 |
| ● Fetal disease |
0.8 |
0.028 |
0.007-0.049 |
6.0 |
264 |
| Syphilis |
1.6 |
0.004 |
<0.001-0.009 |
1.7 |
265 |
| Anemia (registered) |
32.0 |
0.070 |
0.023-0.118 |
24.1 |
238 |
| Treatment for anemia |
52.6 |
0.283 |
0.138-0.428 |
74.8 |
213 |
| Short cervix (US) |
1.4 |
0.011 |
<0.001-0.022 |
4.0 |
209 |
| Cervical insufficiency |
2.1 |
0.005 |
<0.001-0.012 |
2.6 |
230 |
| Cerclage |
1.4 |
0.019 |
0.003-0.034 |
5.6 |
238 |
| Uterine anomalies |
0.6 |
<0.001 |
<0.001-0.003 |
0.6 |
237 |
| Fibroid |
1.9 |
0.002 |
<0.001-0.006 |
1.5 |
233 |
| Maternal diseases: |
|
|
|
|
|
| ● Diabetes |
5.7 |
0.027 |
0.006-0.047 |
7.8 |
254 |
| ● Gestational hypertension |
7.7 |
0.025 |
0.006-0.045 |
9.4 |
254 |
| ● Preeclampsia/eclampsia/HELLP |
16.2 |
0.062 |
0.019-0.104 |
22.5 |
254 |
| ● Chronic hypertension |
5.7 |
0.007 |
<0.001-0.014 |
2.8 |
254 |
| ● Other chronic infection |
0.7 |
0.010 |
0.001-0.020 |
4.5 |
254 |
| ● Thyroid diseases |
1.6 |
0.027 |
0.006-0.047 |
8.2 |
254 |
| ● Renal disease |
1.2 |
0.008 |
<0.001-0.015 |
3.1 |
254 |
| ● Sickle cell anemia |
0.3 |
0.002 |
<0.001-0.006 |
1.5 |
254 |
| ● Other chronic anemia |
0.5 |
<0.001 |
<0.001-0.003 |
0.7 |
254 |
| ● Cardiac disease |
1.1 |
0.003 |
<0.001-0.008 |
1.9 |
254 |
| ● Lung disease |
1.5 |
0.009 |
<0.001-0.017 |
3.8 |
254 |
| ● Epilepsy |
0.6 |
0.001 |
<0.001-0.004 |
1.5 |
254 |
| ● Systemic lupus erythematous |
0.5 |
0.020 |
0.004-0.036 |
4.6 |
254 |
| ● Other collagenoses |
0.2 |
0.001 |
<0.001-0.004 |
1.4 |
254 |
| ● Digestive disease |
0.6 |
0.006 |
<0.001-0.013 |
3.1 |
254 |
| ● Bariatric surgery |
<0.1 |
<0.001 |
<0.001-0.003 |
0.8 |
254 |
| ● Psychiatric disease |
1.0 |
0.015 |
0.003-0.028 |
5.4 |
254 |
| ● Orthopedic disease |
0.2 |
<0.001 |
<0.001-0.003 |
0.9 |
254 |
| ● Neoplasms |
0.2 |
0.001 |
<0.001-0.004 |
1.4 |
254 |
| ● Thrombosis or thrombophilia |
0.4 |
0.006 |
<0.001-0.013 |
2.4 |
254 |
| Fetal malformation |
5.5 |
0.146 |
0.057-0.236 |
35.9 |
246 |
| Fetal growth restriction |
9.3 |
0.019 |
0.004-0.035 |
6.9 |
246 |
| Other fetal morbidity |
7.4 |
0.386 |
0.219-0.554 |
101.5 |
246 |
| Triplets |
2.0 |
<0.001 |
<0.001-0.030 |
1.0 |
22 |
| Infertility treatment |
4.4 |
<0.001 |
<0.001-0.031 |
0.9 |
22 |
| Multiple monochorionic pregnancy |
35.8 |
0.046 |
<0.001-0.111 |
2.0 |
18 |
| Multiple monoamniotic pregnancy |
5.8 |
0.038 |
<0.001-0.098 |
1.9 |
18 |
| Twin-to-twin transfusion syndrome | 5.4 | <0.001 | <0.001-0.036 | 0.9 | 18 |