Table 2.
Definitions of study variables and summary statistics of participants.
| Variable | Definition | Male | Female | ||
|---|---|---|---|---|---|
| Mean | SD | Mean | SD | ||
| CRF | Fitness index score reflecting cardiorespiratory fitness | 57.59 | 11.47 | 56.52 | 13.65 |
| BMI | Body Mass Index (kg/m2) | 24.26 | 3.85 | 22.30 | 3.61 |
| Underweight | If they are underweight (BMI < 18.5), then =1 | 0.05 | 0.21 | 0.11 | 0.31 |
| Normal weight | If they are of normal weight (18.5 ≤ BMI < 24), then =1 | 0.45 | 0.50 | 0.64 | 0.48 |
| Overweight | If they are overweight (24 ≤ BMI < 27), then =1 | 0.29 | 0.45 | 0.16 | 0.36 |
| Obesity | If they are obese (27 ≤ BMI), then =1 | 0.21 | 0.41 | 0.10 | 0.30 |
| Primary | If they finished primary education or less (=1) | 0.02 | 0.15 | 0.03 | 0.18 |
| Junior | If they finished junior high school (=1) | 0.04 | 0.20 | 0.05 | 0.22 |
| Senior | If they finished senior high school (=1) | 0.17 | 0.37 | 0.17 | 0.38 |
| College | If they have college degree (=1) | 0.67 | 0.47 | 0.69 | 0.46 |
| Graduate | If they have graduate school diploma (=1) | 0.10 | 0.30 | 0.05 | 0.23 |
| Age_1820 | If age is between 18 and 20 (=1) | 0.28 | 0.45 | 0.26 | 0.44 |
| Age_2130 | If age is between 21 and 30 (=1) | 0.23 | 0.42 | 0.23 | 0.42 |
| Age_3140 | If age is between 31 and 40 (=1) | 0.20 | 0.40 | 0.22 | 0.42 |
| Age_4150 | If age is between 41 and 50 (=1) | 0.16 | 0.37 | 0.18 | 0.38 |
| Age_5160 | If age is between 51 and 60 (=1) | 0.13 | 0.38 | 0.10 | 0.39 |
| Income 1 | If their monthly income is ≤NT$20,000 (=1) | 0.44 | 0.50 | 0.50 | 0.50 |
| Income 2 | If their monthly income is NT$20,001~NT$40,000 (=1) | 0.27 | 0.44 | 0.35 | 0.48 |
| Income 3 | If their monthly income is NT$40,001~NT$60,000 (=1) | 0.19 | 0.39 | 0.12 | 0.33 |
| Income 4 | If their monthly income is >NT$60,000 (=1) | 0.10 | 0.30 | 0.03 | 0.18 |
| Job 1 | If they work for educational job (=1) | 0.04 | 0.20 | 0.07 | 0.26 |
| Job 2 | If they work for financial sector (=1) | 0.02 | 0.13 | 0.02 | 0.14 |
| Job 3 | If they work for agricultural sector (=1) | 0.01 | 0.12 | 0.01 | 0.08 |
| Job 4 | If they work for service sector (=1) | 0.10 | 0.30 | 0.15 | 0.36 |
| Job 5 | If they are students (=1) | 0.31 | 0.46 | 0.27 | 0.44 |
| Job 6 | If they work for high technology sector (=1) | 0.04 | 0.19 | 0.02 | 0.15 |
| Job 7 | If they work for government sector (=1) | 0.17 | 0.38 | 0.10 | 0.30 |
| Job 8 | If they work for media press (=1) | 0.00 | 0.05 | 0.00 | 0.04 |
| Job 9 | If they work for business sector (=1) | 0.03 | 0.18 | 0.03 | 0.17 |
| Job 10 | If they work for medical or health sector (=1) | 0.03 | 0.17 | 0.08 | 0.27 |
| Job 11 | If they work for construction sector (=1) | 0.09 | 0.28 | 0.04 | 0.19 |
| Job 12 | If they work for other sectors (=1) | 0.16 | 0.37 | 0.21 | 0.41 |
| City | If they live in metropolitan area (=1) | 0.29 | 0.45 | 0.29 | 0.45 |
| North | If they live in Northern Taiwan (=1) | 0.33 | 0.47 | 0.34 | 0.47 |
| Center | If they live in Central Taiwan (=1) | 0.18 | 0.38 | 0.18 | 0.38 |
| South | If they live in Southern Taiwan (=1) | 0.39 | 0.49 | 0.40 | 0.49 |
| East | If they live in Eastern Taiwan (=1) | 0.11 | 0.31 | 0.09 | 0.28 |
|
| |||||
| Sample | 31,743 | 36,432 | |||