. 2022 May 14;22:174. doi: 10.1186/s12905-022-01764-4

Table 2.

Sample size calculation for associated factors with breast self-examination among women in Gondar town, Northwest Ethiopia, 2021

Factors	Assumption	Proportion	Initial sample size	1.5 Design effect	10% Non-response	Reference
Age of the women	CI = 95%	P1 = 23.22%	242	363	400	[32]
Age of the women	Power = 80	P2 = 39.19%	242	363	400
Women’s level of education	Ratio 1:1	P1 = 15.81%	136	204	225
Women’s level of education	Ratio 1:1	P2 = 38.46%	136	204	225
Women’s level of knowledge	Practice of BSE	P1 = 13.28%	138	207	228
Women’s level of knowledge	Practice of BSE	P2 = 35.02%	138	207	228