Table 1.

Sample size for significant factors that affect sleep quality at Debre Markos Referral Hospital Chronic Illness Follow-Up Clinic, 2018.

S. No.	Factors associated with sleep quality	Total largest sample size from Epi Info STATCalc	AOR	Reference
1	Sex	80	4.058	Study conducted at India [23]
2	Depression	118	3.828	Study conducted at Northwest Iran [28]
3	Alcohol drinking	140	0.343	Study conducted at Korea University Hospitals [29]

AOR: adjusted odds ratio.