Table 4. Spearman’s correlation coefficients for lifestyle factors related to changes in BMI z–score.
| Variables | BMI z delta change | |
|---|---|---|
| rho | P | |
| Age | −0.111 | 0.279 |
| Monthly household income, KRW (n = 96) | 0.158 | 0.125 |
| Maternal working hours, hr/day (n = 93) | 0.196 | 0.060 |
| Paternal working hours, hr/day (n = 84) | 0.149 | 0.176 |
| Maternal BMI, kg/m2 (n = 93) | −0.009 | 0.935 |
| Paternal BMI, kg/m2 (n = 84) | −0.082 | 0.459 |
| ∆Dietary quality (DQI) | 0.008 | 0.936 |
| ∆Calorie intake, kcal | 0.102 | 0.321 |
| ∆Fruit intake, frequency/wk | −0.046 | 0.656 |
| ∆Sugar-sweetened beverage intake, frequency/wk | 0.094 | 0.363 |
| ∆Fast-food intake, frequency/wk | 0.294 | 0.004 |
| ∆Snack intake, frequency/wk | −0.043 | 0.675 |
| ∆Vegetable intake, frequency/wk | 0.030 | 0.774 |
| ∆Physical activity (METS) | −0.003 | 0.980 |
| ∆Screen time, hr/day | −0.037 | 0.724 |
| ∆Exercise frequency, frequency/wk | −0.053 | 0.606 |
| ∆Sedentary time, min/day | 0.310 | 0.002 |
| ∆Walking duration, min/day (n = 93) | 0.004 | 0.967 |
| ∆Sleeping duration, min/day (n = 95) | 0.063 | 0.542 |
Spearman’s rank correlation coefficients presented for the factors related to BMI z–score change. Change values calculated as postintervention–preintervention values.
BMI = body mass index, KRW = Korean Republic Won, DQI = Dietary Quality Index, METS = metabolic equivalent of tasks.