Table 4. Association between the purposes of Internet use and pubertal timing and weight status among female adolescents.
Chatting | Gaming | Non-academic browsing | Pornography viewing | |||||
---|---|---|---|---|---|---|---|---|
N (%) | aOR (95% CI) | N (%) | aOR (95% CI) | N (%) | aOR (95% CI) | N (%) | aOR (95% CI) | |
Pubertal development | ||||||||
Early puberty | 78 (49.1) | 1.22 (0.86–1.76) | 27 (17) | 0.59 (0.36–0.96) | 94 (59.1) | 1.07 (0.74–1.53) | 2 (1.3) | NA |
On-time puberty | 378 (43) | Reference | 190 (21.6) | Reference | 490 (55.7) | Reference | 2 (0.2) | NA |
Late puberty | 63 (41.7) | 0.90 (0.61–1.32) | 39 (25.8) | 1.06 (0.68–1.64) | 77 (51.0) | 0.78 (0.54–1.14) | 0 (0) | NA |
BMI at W1 | ||||||||
Thin weight | 67 (46.9) | 1.34 (0.82–2.21) | 33 (23.1) | 0.54 (0.29–0.99) | 77 (53.8) | 0.82 (0.50–1.34) | 0 (0) | NA |
Normal weight | 387 (43.4) | Reference | 187 (21) | Reference | 498 (55.8) | Reference | 4 (0.4) | NA |
Overweight | 46 (44.2) | 0.91 (0.50–1.65) | 25 (24) | 1.92 (0.96–3.83) | 64 (61.5) | 1.36 (0.75–2.49) | 0 (0) | NA |
Obesity | 19 (38) | 0.57 (0.19–1.65) | 11 (22) | 1.91 (0.52–1.94) | 22 (44) | 0.88 (0.31–2.54) | 0 (0) | NA |
BMI at W3 | ||||||||
Thin weight | 51 (42.5) | 0.71 (0.43–1.20) | 36 (30) | 2.50 (1.39–4.48) | 64 (53.3) | 0.98 (0.59–1.64) | 1 (0.8) | NA |
Normal weight | 402 (43.7) | Reference | 189 (20.6) | Reference | 514 (55.9) | Reference | 2 (0.2) | NA |
Overweight | 43 (43.9) | 1.07 (0.58–1.98) | 19 (19.4) | 0.56 (0.26–1.20) | 60 (61.2) | 1.03 (0.55–1.92) | 1 (1) | NA |
Obesity | 23 (44.2) | 1.35 (0.45–4.07) | 12 (23.1) | 0.47 (0.12–1.81) | 23 (44.2) | 0.52 (0.17–1.55) | 0 (0) | NA |
ΔBMI-SDS W1-3 | 0.96 (0.66–1.30) | 1.27 (0.87–1.86) | 1.26 (0.91–1.74) | NA |
aOR represents adjusted odds ratio; CI, confidence interval; BMI-SDS, standardized score of body mass index; W1, Wave 1; W3, Wave 3; NA, not applicable. Family monthly income was adjusted in multivariate binary logistic regression analysis. Due to an insufficient number of pornography viewers, regression analysis was not applicable to the female population