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Table 1 Sample size determination

From: Risk factors associated with hypertensive disorders in pregnancy in Nekemte referral hospital, from July 2015 to June 2017, Ethiopia: case-control study

Relevant factorsExpected frequency of exposure among controlORCaseControlTotal Sample
Diabetes9%2.4243485728
Prime gravid28.08%2.1–3116232348
Age (> 35 years old)31.3%4.5136272408