Table 3 Results of univariate and multivariate analyses of student characteristics and anxiety

District

North

428 (68.6%)

196 (31.4%)

0.002

-

-

Middle

225 (59.8%)

151 (40.2%)

0.106

1.3 (0.95 − 1.7)

South

83 (59.3%)

57 (40.7%)

0.001

2.2 (1.4–3.3)

Gender

Male

212 (79.4%)

55 (20.6%)

< 0.001

-

-

Female

524 (60.0%)

349 (40.0%)

< 0.001

3.8 (2.5–5.9)

Grade

10th Grade

401 (71.5%)

160 (28.5%)

< 0.001

-

-

11th Grade

335 (57.9%)

244 (42.1%)

< 0.001

1.8 (1.4–2.3)

Field

Scientific

194 (55.4%)

156 (44.6%)

Art

100 (62.9%)

59 (37.1%)

0.248

Others

38 (61.3%)

24 (38.7%)

Academic performance

Excellent (90–100)

362 (68.2%)

169 (31.8%)

-

-

Very good (80–89)

208 (67.5%)

100 (32.5%)

< 0.001

0.179

1.3 (0.9-1.7)

Good (70–79)

110 (59.5%)

75 (40.5%)

0.001

1.9 (1.3–2.8)

Intermediate or acceptable (< 70)

56 (48.3%)

60 (51.7%)

< 0.001

3.2 (2–5)

Smoking

Yes

73 (59.8%)

49 (40.2%)

0.248

0.014

1.9 (1.1-3)

No

663 (65.1%)

355 (34.9%)

-

-

Duration of exercise

< 1 h per week

397 (60.4%)

260 (39.6%)

0.508

1.2(0.73 − 1.9)

1–2 h per week

188 (69.1%)

84 (30.9%)

0.006

0.743

0.92 (0.55 − 1.5)

2–3 h per week

72 (74.2%)

25 (25.8%)

0.711

0.89 (0.46 − 1.7)

≥ 3 h per week

79 (69.3%)

35 (30.7%)

-

-

Duration of devices use

< 1 h per day

79 (71.2%)

32 (28.8%)

0.008

0.53 (0.33-0.85)

1–2 h per day

155 (75.6%)

50 (24.4%)

< 0.001

< 0.001

0.47 (0.32-0.69)

2–3 h per day

192 (70.3%)

81 (29.7%)

0.003

0.61 (0.44-0.85)

> 3 h per day

310 (56.3%)

240 (43.7%)

-

-