Table 1 Demographic characteristics of the study sample.

1.

Gender

1. Male

207 (51.8%)

2. Female

193 (48.2%)

2.

Age (years)

20.2 ± 1.3

3.

College

1. Medical

203 (50.8%)

2. Non-Medical

197 (49.2%)

4.

Academic level

1. First year

77 (19.3%)

2. Second year

133 (33.2%)

3. Third year

90 (22.5%)

4. Fourth year

100 (25%)

5.

Place of living

1. Student housing

162 (40.4%)

2. With parents

238 (59.5%)

6.

Permanent residence

1. City

194 (48.5%)

2. Village

206 (51.5%)

7.

Body Mass Index (BMI)

1. Within normal range

380 (95%)

2. Above or below normal range

20 (5%)

8.

Do you work during day?

1. Never

306 (76.5%)

2. Sometimes

75 (18.8%)

3. Part-time

11 (2.8%)

4. Full time

8 (2%)

9.

Do you work at night?

1. Never

353 (88.2%)

2. Sometimes

40 (10%)

3. Part-time

3 (0.8%)

4. Full time

4 (1%)