Table 1 Socio-demographic characteristics of the studied participants (N = 745)

Age

M ± SD (Max.-Min.)

20.1 ± 1.4 (31–17)

19.8 ± 1.3 (25–17)

20.54 ± 1.3 (31–18)

 < 0.001*^&

Gender

Male

312 (41.9%)

142 (34%)

170 (52%)

 < 0.001*

Female

433 (58.1%)

276 (66%)

157 (48%)

No. of siblings

 < 3

609 (81.7%)

326 (78%)

283 (86.5%)

0.003*

 ≥ 3

136 (18.3%)

92 (22%)

44 (13.5%)

Family income

 < 5000 EGP

400(53.7%)

225 (53.8%)

175 (53.5%)

0.930

 ≥ 5000 EGP

345(46.3%)

193 (46.2%)

152 (46.5%)

Cigarette smoking

Yes

54 (7.2%)

16 (3.8%)

38 (11.6%)

 < 0.001*

No

691 (92.8%)

402 (96.2%)

289 (88.4%)

Lifetime drug abuse

Yes

6 (0.8%)

1 (0.2%)

5 (1.5%)

0.060

No

739 (99.2%)

417 (99.8%)

322 (98.5%)

Lifetime alcohol use

Yes

19 (2.6%)

2 (0.5%)

17 (5.2%)

 < 0.001*

No

726 (97.4%)

416 (99.5%)

310 (94.8%)

Regular Practice

Yes

281 (37.7%)

156 (37.3%)

125 (38.2%)

0.800

No

464 (62.3%)

262 (62.7%)

202 (61.8%)

Sleeping hours / day

 < 8 h

459 (61.6%)

259 (62%)

200 (61.2%)

0.820

8–10 h

286 (38.4%)

159 (38%)

127 (38.8%)

Satisfaction with family’s relationship

Very satisfied

394 (52.9%)

242 (57.9%)

152 (46.5%)

 < 0.001*^#

Satisfied

179 (24%)

98 (23.4%)

81 (24.8%)

Neutral

130 (17.4%)

61 (14.6%)

69 (21.1%)

Dissatisfied

35 (4.7%)

13 (3.1%)

22 (6.7%)

Strongly dissatisfied

7 (0.9%)

4 (1%)

3 (0.9%)

Satisfaction with friends' relationship

Very satisfied

249 (33.4%)

143 (34.2%)

106 (32.4%)

0.09^#

Satisfied

284 (38.1%)

172 (41.1%)

112 (34.3%)

Neutral

178 (23.9%)

87 (20.8%)

91 (27.8%)

Dissatisfied

21 (2.8%)

7 (1.7%)

14 (4.3%)

Strongly dissatisfied

13 (1.7%)

9 (2.2%)

4 (1.2%)