Determinants of ectopic pregnancy among pregnant women attending referral hospitals in southwestern part of Oromia regional state, Southwest Ethiopia: a multi-center case control study

Table 1 Epi Info sample size calculation

Exposure variables	Proportion ion among cases	Proportion on among controls	AOR	Sample size		Final Sample Adding 10% nonresponse
Exposure variables	Proportion ion among cases	Proportion on among controls	AOR	Cases	Controls	Final Sample Adding 10% nonresponse
Pervious History of ectopic pregnancy	9.7	1.3	13.1	53	106	177
Single marital status	25	3	10.8	32	64	105
Pervious tubal surgery	44	3	14	25	50	84

ISSN: 1471-2393