Table 5 Characteristics of the subjects according to caffeine consumption level

Age (year)

20.38 ±1.962

20.25 ±1.90

0.466

College

0.040

 Health

119 (55.60%)

146 (46.50%)

 Non-health

95 (44.40%)

168 (53.50%)

Nationality

0.107

 Saudi

208 (97.20%)

311 (99.00%)

 Non-Saudi

6 (2.80%)

3 (1.00%)

Marital status^a

0.766

 Single

205 (96.20%)

300 (95.50%)

 Married

6 (2.80%)

12 (3.80%)

 Separated

2 (0.90%)

2 (0.60%)

Kids

0.070

 Have kids

1 (0.50%)

8 (2.50%)

 Does not have kids

213 (99.50%)

306 (97.50%)

Income^a

0.236

 Enough

125 (58.70%)

188 (60.30%)

 Enough with saving

70 (32.90%)

83 (26.60%)

 Not enough

16 (7.20%)

36 (11.50%)

 In debt

2 (0.90%)

5 (1.60%)

Academic level

0.698

 Junior

130 (60.70%)

196 (62.40%)

 Senior

84 (39.30%)

118 (37.60%)

GPA^a

0.553

 5-4.50

95 (45.70%)

123 (39.70%)

 4.49-4

64 (30.80%)

111 (35.80%)

 3.9-3.50

30 (14.40%)

48 (15.50%)

Less than 3.50

19 (9.10%)

28 (9.00%)

Academic satisfaction^a

0.145

 Very satisfied

48 (22.50%)

71 (22.70%)

 Satisfied

109 (51.20%)

136 (43.50%)

 Not satisfied

45 (21.10%)

73 (23.30%)

 Very unsatisfied

10 (4.70%)

32 (10.20%)

Chronic diseases^a

0.402

 Diagnosed

17 (7.90%)

19 (6.10%)

 Not diagnosed

197 (92.10%)

294 (93.90%)

Psychiatric disorders^a

0.027

 Diagnosed

14 (6.50%)

39 (12.40%)

 Not diagnosed

200 (93.50%)

275 (87.60%)

Psychiatric help^a

0.693

 Received help

8 (61.50%)

21 (55.30%)

 Did not receive

5 (38.50%)

17 (44.70%)

Smoking^a

0.704

 Smoker

11 (36.70%)

19 (63.30%)

 Non-smoker

198 (40.20%)

295 (59.80%)

Caffeine intoxication^a

0.005

 Intoxication symptoms

17 (25.00%)

51 (75.00%)

 No intoxication symptoms

196 (42.90%)

261 (57.10%)

Perceived stress scale

20.27±6.31

21.40±6.38

0.045