Table 6: Independent factors associated with poor sleep quality (sampled = 422) among adults in Jimma town, April 2016.

Variables Global PSQI scoreBivariable resultMultivariable result
Poor sleepers Good sleepers Total valueCOR (95% CI) valueAOR (95% CI)
(%) (%) (%)

Age category
 19–29 years72 (26.1)48 (32.9)120 (28.4)1.01.0
 30–39 years73 (26.4)41 (28.1)114 (27.0)0.531.2 (0.7, 2.1)0.830.9 (0.5,1.7)
 40–49 years79 (28.6)33 (22.6)112 (26.5)0.091.6 (0.9, 2.8)2.0 (1.1, 3.6)
 50–64 years52 (18.8)24 (16.4)76 (18.0)0.031.4 (0.9, 2.6)0.371.4 (0.7, 2.8)
Monthly income
 >1000 ETB128 (46.4)96 (65.8)224 (53.1)1.01.0
 ≤1000 ETB148 (53.6)50 (34.2)198 (46.9)0.002.2 (1.5, 3.4)2.2 (1.4, 3.5)
Khat chewing status
 Never84 (30.4)51 (34.9)135 (32.0)1.01.0
 Former43 (15.6)28 (19.2)71 (16.8)0.810.9 (0.5, 1.7)0.331.4 (0.7, 2.7)
 Current149 (54.0)67 (45.9)216 (51.2)0.191.4 (0.9, 2.3)1.8 (1.1, 3.1)
Frequency of khat chewing
 1–3 times/wk36 (24.2)21 (31.3)57 (26.4)1.01.0
 3–7 times/wk39 (26.2)20 (29.9)59 (27.3)0.380.8 (0.5, 1.2)0.182.3 (0.7, 7.8)
 Daily74 (49.6)26 (38.8)100 (46.3)0.141.5 (0.9, 2.7)3.4 (1.2, 11.1)
Categories of BMI (kg/cm2)
 Normal123 (44.6)60 (41.1)183 (43.4)1.0
 Underweight48 (17.4)20 (13.7)68 (16.1)0.611.2 (0.6, 2.1)0.050.9 (0.3, 2.2)
 Overweight84 (30.4)50 (34.2)134 (31.8)0.400.8 (0.5,1.4)0.061.1 (0.6, 1.8)
 Obese21 (7.6)16 (11.0)37 (8.8)0.6 (0.3, 13)1.2 (1.3, 2.5)

value < 0.25; significant at value <0.05.