Table 3.
Characteristics of children and adolescents in the first administration of the SF-FFQ4PolishChildren questionnaire.
| Variables | Children Aged 6–10 Years (Questionnaire Filled Out by A Parent) |
Adolescents Aged 11–15 Years (Questionnaire Filled Out by An Adolescent) |
||
|---|---|---|---|---|
| n | % | n | % | |
| Sample size | 437 | 630 | ||
| Sex | ||||
| boys | 211 | 48.3 | 325 | 51.6 |
| girls | 226 | 51.7 | 305 | 48.4 |
| Age (years) 1 | 437 | 8.0 (7.9; 8.1) |
630 | 12.5 (12.4; 12.6) |
| Residence | 437 | 630 | ||
| rural | 231 | 52.9 | 293 | 46.5 |
| urban 2 | 206 | 47.1 | 337 | 53.5 |
| FAS (points) 1 | 431 | 6.2 (6.0; 6.4) |
622 | 6.8 (6.7; 6.9) |
| Nutrition knowledge score (points) 1,3 | 436 | 10.4 (10.1; 10.6) |
626 | 7.2 (6.9; 7.4) |
| Nutrition knowledge level 3 | 436 | 626 | ||
| low | 28 | 6.4 | 191 | 30.5 |
| moderate | 310 | 71.1 | 417 | 66.6 |
| high | 98 | 22.5 | 18 | 2.9 |
| pHDI (%points) 1 | 433 | 31.5 (30.3; 32.8) |
628 | 29.0 (27.9; 30.1) |
| pHDI category | 433 | 628 | ||
| low | 252 | 58.2 | 417 | 66.4 |
| moderate | 175 | 40.4 | 204 | 32.5 |
| high | 6 | 1.4 | 7 | 1.1 |
| nHDI (%points) 1 | 436 | 13.0 (12.2; 13.9) |
627 | 15.1 (14.2; 16.0) |
| nHDI category | 436 | 627 | ||
| low | 416 | 95.4 | 577 | 92.0 |
| moderate | 20 | 4.6 | 49 | 7.8 |
| high | 0 | 0.0 | 1 | 0.2 |
| Screen time score (points) 1 | 437 | 0.4 (0.4; 0.5) |
629 | 0.9 (0.8; 1.0) |
| Screen time category | 437 | 629 | ||
| <2 h/day | 278 | 63.6 | 262 | 41.7 |
| 2 to <4 h/day | 134 | 30.7 | 238 | 37.8 |
| 4 to <6 h/day | 22 | 5.0 | 90 | 14.3 |
| 6 to <8 h/day | 0 | 0.0 | 19 | 3.0 |
| 8 to <10 h/day | 2 | 0.5 | 10 | 1.6 |
| ≥10 h/day | 1 | 0.2 | 10 | 1.6 |
| Physical activity score (points) 1 | 437 | 3.2 (3.0; 3.3) |
629 | 3.4 (3.3; 3.5) |
| Physical activity level | 437 | 629 | ||
| low | 73 | 16.7 | 99 | 15.7 |
| moderate | 304 | 69.6 | 378 | 60.1 |
| high | 60 | 13.7 | 152 | 24.2 |
| Physical activity at school | 437 | 629 | ||
| low | 74 | 16.9 | 68 | 10.8 |
| moderate | 284 | 65.0 | 316 | 50.2 |
| high | 79 | 18.1 | 245 | 39.0 |
| Physical activity at leisure time | 437 | 629 | ||
| low | 31 | 7.1 | 81 | 12.9 |
| moderate | 219 | 50.1 | 284 | 45.2 |
| high | 187 | 42.8 | 264 | 42.0 |
| BMI-for-age | 415 | 595 | ||
| thinness | 76 | 18.3 | 81 | 13.6 |
| normal weight | 263 | 63.4 | 425 | 71.4 |
| overweight | 76 | 18.3 | 89 | 15.0 |
1 mean and 95% confidence interval (CI); 2 urban residents—respondents who indicated one of the following categories of place of residence: “town” or “city (≥100,000 inhabitants)”; FAS—the Family Affluence Scale composed of six questions and ranged from 0–9 points [26]; nutrition knowledge score—evaluated based on 18 questions and ranged 0–18 points [22]; nutrition knowledge level—assessed in three categories: Low (0–5 points), moderate (6–12 points), high (13–18 points); 3 in a group of 6–10-year-old children, nutrition knowledge was assessed in their parents; pHDI (% points)—a pro-healthy diet index composed of four questions (dairy products, fish, vegetables, fruit) and ranged from 0–100 points [22]; pHDI category—low (0–33.32% points), moderate (33.33–66.65% points), high (66.66–100% points); nHDI (% points)—a non-healthy diet index composed of four questions (fast food, sweetened soft drinks, energy drinks, sweets) and ranged from 0–100 points [22]; nHDI category—low (0–33.32% points), moderate (33.33–66.65% points), high (66.66–100% points); screen time score—based on a single question with six response categories and ranged from 0–5 points [22]; physical activity score—based on two questions: Physical activity at school and physical activity at leisure time, and ranged from 0–5 points [22]; physical activity level—assessed in three categories: Low (0–1 points), moderate (2–4 points), high (5 points); BMI-for-age—the age-sex-specific body mass index calculated using self-reported height and weight and assessed in three categories [27].