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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Sleep Breath. 2012 Dec 14;17(3):1017–1028. doi: 10.1007/s11325-012-0792-1

Table 4.

Consumption of energy drinks, caffeinated beverages and stimulants in relation to sleep quality status

Exposure Poor Sleep Quality N=1,373 Good Sleep Quality N=1,481 P-value

n (%) n (%)
Any stimulant beverages
 No 496 (36.1) 703 (47.5) <0.001
 Yes 877 (63.9) 778 (52.5)
  Type of beverage
   Coke/Pepsi with sugar 689 (50.2) 597 (40.3) <0.001
   Coke/Pepsi sugar free 192 (14.0) 152 (10.3) 0.002
   M 100/M 150 101 (7.4) 67 (4.5) 0.001
   Red Bull 43 (3.1) 33 (2.2) 0.134
   Other Energy Drinks* 28 (2.0) 24 (1.6) 0.403
Coffee
 No 965 (70.3) 1,161 (78.4) <0.001
 Yes 408 (29.7) 320 (21.6)
   With sugar 379 (27.6) 295 (19.9)
   Sugar Free 95 (6.9) 68 (4.6)
Tea <0.001
 No 630 (45.9) 857 (57.9)
 Yes 743 (54.1) 624 (42.1)
   With sugar 708 (51.6) 595 (40.2)
   Sugar Free 285 (20.8) 231 (15.6)
Number of stimulant beverages/week
   0 497 (36.2) 708 (47.8) <0.001
   1 116 (8.4) 146 (9.9)
   2 270 (19.7) 265 (17.9)
   ≥3 490(35.7) 362 (24.4)
*

Other energy drinks includes the following: Carabao Daeng, Lipovitan-D or Lipo, Wrangyer, and Shark