Table 4: Substances use and its association with sleep quality among adults in Jimma town, southwest Ethiopia, April 2016.

Variables Global PSQI score
Poor sleepers Good sleepers Total 422 valueCOR (95% CI)
%%%

Khat chewing status
 Never8430.45134.913532.01.0
 Former4315.62819.27116.80.810.9 (0.5, 1.7)
 Current14954.06745.921651.21.4 (0.9, 2.3)
Frequency of khat chewing
 1–3 times/wk3624.22131.35726.41.0
 3–6 times/wk3926.22029.95927.30.741.1 (0.4, 2.4)
 Daily7449.62638.810046.31.7 (0.8, 3.3)
Cost of khat per ceremony
 ≤15 Birr8657.74465.713060.21.0
 16–251812.11116.42913.40.670.8 (0.3, 1.9)
 >254530.21217.95726.41.9 (0.9, 3.9)
Alcohol consumption status
 Never13749.66947.320648.81.0
 Former3010.92416.45412.80.6 (0.3, 1.2)
 Current10939.55336.316238.41.1 (0.7, 1.6)
Kind of alcohol consumed
 Beer6963.34075.510967.3
4036.71324.55332.71.8 (0.9, 3.7)
Amount of coffee consumed per day
 1-2 cups/day10841.95742.516542.11.0
 3-4 cups/day8332.25440.313734.90.380.8 (0.5, 1.2)
 5 ≥ cups/ day6726.02317.29023.01.5 (0.9, 2.7)

value < 0.25; represent Tela, Tej, and Katicala.