Table 1.
Characteristics of study subjects aged 13–15 years.
| Total (n = 249) | Boys (n = 122) | Girls (n = 127) | p-Value | |
|---|---|---|---|---|
| Age (years) | 13.28 ± 0.59 | 13.24 ± 0.53 | 13.31 ± 0.64 | 0.301 |
| Subjective health status * | 183 (58.9%) | 96 (39.0%) | 87 (35.4%) | 0.223 |
| Vigorous physical activity (more than 20 min) | ||||
| Never | 58 (23.3%) | 19 (15.6%) | 39 (31.2%) | 0.004 |
| 1–2 times/week | 95 (38.5%) | 45 (36.9%) | 50 (40.0%) | |
| 3–4 times/week | 73 (29.6%) | 43 (35.3%) | 30 (24.0%) | |
| ≥5 times/week | 21 (8.5%) | 15 (12.3%) | 6 (4.8%) | |
| Sedentary lifestyle | ||||
| Never | 4 (1.63%) | 1 (0.8%) | 3 (2.4%) | 0.988 |
| Less than 1 h/day | 64 (26.0%) | 31 (26.4%) | 33 (26.4%) | |
| 1–2 h/day | 73 (29.7%) | 36 (29.8%) | 37 (29.6%) | |
| More than 2 h/day | 105 (42.7%) | 53 (43.8%) | 52 (41.6%) | |
| Dietary Inflammation Index | 0.00 ± 1.85 | −0.25 ± 1.72 | 0.24 ± 1.95 | 0.037 |
| hs-CRP (mg/dL) | 0.16 (0.11, 0.38) | 0.20 (0.11, 0.48) | 0.11 (0.11, 0.33) | 0.013 |
| IL-6 (pg/mL) | 2.74 (2.02, 3.65) | 2.72 (2.01, 3.48) | 2.76 (2.08, 3.76) | 0.788 |
| cMetS | 0.00 ± 3.03 | 0.00 ± 3.15 | 0.00 ± 2.92 | 0.425 |
| Monthly household income, KRW | ||||
| <KRW 3 million | 16 (6.6%) | 7 (5.8%) | 9 (7.3%) | 0.739 |
| KRW 3–5 million | 68 (27.9%) | 34 (28.1%) | 34 (27.6%) | |
| ≥KRW 5 million | 160 (65.6%) | 80 (66.1%) | 80 (65.0%) | |
* Subjective health good status. Values are presented as mean ± SD (standard deviation) or median (interquartile range) or n (%). hs-CRP, high-sensitivity C-reactive protein; IL-6, Interleukin-6; cMetS, continuous metabolic syndrome risk score; KRW, Korean won.