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. 2021 Jul 17;28(48):68706–68716. doi: 10.1007/s11356-021-15412-1

Table 1.

Characteristics data of studied students (no = 2380)

no % no %
Age (years) Studying hours/week

Mean ± SD

Range

20.5 ± 1.35

18–24

˂10 h

10–15 h

˃15 h

576

868

936

24.2

36.5

39.3

Sex Free time/week

Male

Female

1572

808

66.1

33.9

˂10 h

10–15 h

˃15 h

512

740

1128

21.5

31.1

47.4

Residence Working

Rural

Urban

1472

908

61.8

38.2

Yes

No

912

1468

38.3

61.7

Type of college Type of work (no = 912)

Practical

Theoretical

1568

812

65.9

34.1

Daily full-time

Daily part-time

On vacations only

100

144

668

11

15.8

73.2

Study grade Source of expenses

1st

2nd

3rd

4th

5th

6th

636

844

412

448

28

12

26.7

35.5

17.3

18.8

1.2

0.5

Family

Personal

2172

208

91.3

8.7

Personal expense/month

˂500

500–1500

˃1500

516

1544

320

21.7

64.9

13.4

Family income (EGP/Month) Study performance

˂4000

4000–9000

˃9000

1016

1076

288

42.7

45.2

12.1

Bad

Good

Excellent

180

1412

788

7.6

59.3

33.1

Socioeconomic status Private educational courses

Low

Medium

High

992

1108

280

41.6

46.8

11.7

Yes

No

816

1564

34.3

65.7