Cataract Prevalence and Its Associated Factors among Adult People Aged 40 Years and above in South Ari District, Southern Ethiopia

Table 1

Sample size determination for associated risk factors of cataract among adult people aged 40 years and above in South Ari district, Southern Ethiopia, 2021.

S. no.	Main factors	CI (%)	Power (%)	Ratio	Outcome in unexposed group (p1)	Outcome in exposed (p2)	OR	Sample size	Total sample size	Reference
1	Objective one
1.1	Prevalence	95	80	1 : 1	3.64	96.36	2.59	333	366	[8, 9]
2	Objective two
2.1	Cigarette smoking	95	80	1 : 1	49.1	12.6	2.1	264	288	[8]
2.2	Occupation	95	80	1 : 1	24.9	54.4	2.0	331	364	[15]
2.3	Systemic illness	95	80	1 : 1	86.8	13.2	2.3	314	345	[8]