Table 4.
Exposure | Good sleep quality (N = 401) | Poor sleep quality (N = 431) | P value |
---|---|---|---|
n (%) | n (%) | ||
Any stimulant beverages | |||
No | 200 (50.4) | 171 (41.2) | <0.01 |
Yes | 197 (49.6) | 244 (58.8) | |
Type of beverage | |||
Coke/Pepsi with sugar | 178 (44.4) | 193 (44.8) | 0.910 |
Coke/Pepsi sugar-free | 17 (4.2) | 32 (7.4) | 0.051 |
Red Bull | 65 (16.2) | 108 (25.1) | <0.01 |
Dark Dog | 31 (7.7) | 53 (12.3) | 0.029 |
Other energy drinks* | 11 (2.7) | 22 (5.1) | 0.081 |
Coffee | |||
No | 188 (46.9) | 179 (41.5) | 0.120 |
Yes | 213 (53.1) | 252 (58.5) | |
With sugar | 140 (34.9) | 147 (34.1) | 0.807 |
Sugar-free | 73 (18.2) | 105 (24.4) | 0.031 |
Tea | |||
No | 328 (81.8) | 341 (79.1) | 0.331 |
Yes | 73 (18.2) | 90 (20.9) | |
With sugar | 4 (1.0) | 5 (0.6) | 0.821 |
Sugar-free | 69 (17.2) | 85 (19.7) | 0.351 |
Number of stimulant beverages/week | |||
0 | 141 (35.2) | 121 (28.1) | 0.073 |
1 | 64 (16.0) | 76 (17.6) | |
2 | 106 (26.4) | 110 (25.5) | |
≥3 | 90 (22.4) | 124 (28.8) |
*Other energy drinks include the following: Burn, Shark, Red Devil, and Battery.