Sleep Disorders / 2012 / Article / Tab 4

Research Article

The Epidemiology of Sleep Quality, Sleep Patterns, Consumption of Caffeinated Beverages, and Khat Use among Ethiopian College Students

Table 4

Consumption of caffeinated beverages and khat use according to sleep quality.

ExposurePoor sleep quality
**N  = 1,055
Good sleep quality
**N  = 1,175
P value
n (%)n (%)

Any coffee containing beverages
 No207 (17.7)229 (21.75)
 Yes965 (82.3)824 (78.2) 0.015
Type of caffeinated beverage
 Spris (coffee mixed with  tea) 369 (31.4) 340 (32.2) 0.677
 Coffee/Espresso 588 (50.0) 402 (40.9) <0.001
 Diluted coffee 235 (20.0) 247 (23.4) 0.051
 Coke/Pepsi 463 (39.4) 426 (40.4) 0.639
Khat consumption
 No904 (88.1)847 (90.7)
 Yes122 (11.9)87 (9.3) 0.065
Khat consumption frequency/week
 0923 (89.9)865 (92.6)
 1-253 (5.2)36 (3.9)0.106
≥3 50 (4.9) 33 (3.5)

P value from Chi-Square test for categorical variables or from Student’s t-test for continuous variables.
Diluted coffee includes macchiato and cappuccino.
**Numbers may not add up due to missing data for selected variables.