Table 2 Proportion of potential overweight/obesity influencing factors among children and adolescents at different gender

Sleep duration

0.007

0.002

 Very short

2400 (35.1)

764 (40.2)

645 (44.6)

1740 (29.9)

716 (39.6)

295 (32.5)

 Short

1980 (28.9)

539 (28.3)

386 (26.7)

1656 (28.5)

478 (26.4)

223 (24.6)

 Recommended

1763 (25.8)

335 (17.6)

238 (16.4)

1584 (27.2)

407 (22.5)

202 (22.2)

 Long

699 (10.2)

264 (13.9)

178 (12.3)

835 (14.4)

208 (11.5)

188 (20.7)

P_trend

0.035

0.028

0.017

0.042

0.031

0.025

Physical activity

0.003

<0.001

 ≤2h/day

6200 (90.6)

1480 (77.8)

1300 (89.8)

4698 (80.8)

1494 (82.6)

872 (96.0)

 >2h/day

642 (9.4)

422 (22.2)

147 (10.2)

1117 (19.2)

315 (17.4)

36 (4.0)

Internet surfing

0.012

0.017

 ≤2h/day

1319 (19.3)

339 (17.8)

252 (17.4)

1002 (17.2)

325 (18.0)

162 (17.8)

 >2h/day

5523 (80.7)

1563 (82.2)

1195 (82.6)

4813 (82.8)

1484 (82.0)

746 (82.2)

Watching TV

0.014

0.023

 ≤2h/day

1994 (29.1)

444 (23.3)

388 (26.8)

1494 (25.7)

519 (28.7)

226 (24.9)

 >2h/day

4848 (70.9)

1458 (76.7)

1059 (73.2)

4321 (74.3)

1290 (71.3)

682 (75.1)

Playing on phone

0.005

<0.001

 ≤2h/day

840 (12.3)

124 (6.5)

374 (25.8)

274 (4.7)

89 (4.9)

95 (10.5)

 >2h/day

6002 (87.7)

1778 (93.5)

1073 (74.2)

5541 (95.3)

1720 (95.1)

813 (89.5)

0.011

0.018

 Yes

5599 (81.8)

1339 (70.4)

1066 (73.7)

4650 (80.0)

1359 (75.1)

814 (89.6)

 No

1243 (18.2)

563 (29.6)

381 (26.3)

1165 (20.0)

450 (24.9)

94 (10.4)