Table 1 Sample size calculation using Epi Info 7.0 StatCalc program
Factors | Percent of controls exposed | AOR | Sample size for cases | Sample size for controls | Total sample size | Reference |
|---|---|---|---|---|---|---|
Residence | 28.6% | 2.5 | 59 | 175 | 234 | [28] |
Educational status | 23% | 6.8 | 15 | 45 | 60 | [28] |
Total monthly income | 6.1% | 5.94 | 33 | 97 | 130 | [28] |
Duration of labor | 18.3% | 4.75 | 24 | 70 | 94 | [28] |
Mode of delivery | 20.7% | 3.85 | 30 | 90 | 120 | [28] |
Duration of rupture of membrane | 16% | 3.73 | 35 | 105 | 140 | [28] |
Number of vaginal examination | 14.1% | 2.3 | 101 | 303 | 404 | [28] |
Referral status during labor | 27.2% | 2.5 | 59 | 177 | 236 | [28] |