Table 1.
Characteristics of the sample of adolescents from public and private schools (n = 862), Goiânia, Brazil, 2010–2011
| Variable | Total sample | Public School | Private School | p a | |||
|---|---|---|---|---|---|---|---|
| n | % (95% CI) | n | % (95% CI) | n | % (95% CI) | ||
| School type | |||||||
| Public | 596 | 69.1 (65.9–72.2) | - | - | |||
| Private | 266 | 30.9 (27.8–34.1) | - | - | |||
| Gender | |||||||
| Male | 407 | 47.2 (43.8–50.6) | 280 | 47.0 (42.9–51.1) | 127 | 52.3 (41.6–53.9) | 0.835 |
| Female | 455 | 52.8 (49.3–56.1) | 316 | 53.0 (48.9–57.1) | 139 | 47.7 (46.1–58.4) | |
| Age (years) | |||||||
| 14–15 | 450 | 52.2 (48.8–55.5) | 306 | 51.3 (47.2–55.4) | 144 | 54.1 (47.9–60.2) | 0.448 |
| 16–18 | 412 | 47.8 (44.4–51.1) | 290 | 48.7 (44.6–52.8) | 122 | 45.9 (39.8–52.0) | |
| Skin colourb | |||||||
| Non-white | 420 | 48.8 (45.4–52.2) | 316 | 53.2 (48.9–57.0) | 104 | 39.1 (33.1–45.2) | <0.001* |
| White | 440 | 51.2 (47.7–54.5) | 278 | 46.8 (42.6- 50.7) | 162 | 60.9 (54.8–66.8) | |
| Socioeconomic classification | |||||||
| A - B | 375 | 43.5 (40.1–46.8) | 186 | 31.2 (27.5–35.0) | 189 | 71.0 (65.2–76.4) | |
| C | 453 | 52.5 (49.1–55.9) | 378 | 63.4 (59.4–67.2) | 75 | 28.2 (22.9–34.0) | <0.001* |
| D – E | 34 | 4.0 (2.74–5.46) | 32 | 5.4 (3.7–7.5) | 2 | 0.8 (0.1–2.7) | |
| Tobacco use | |||||||
| No | 848 | 98.4 (97.2–99.1) | 584 | 98.0 (96.5–98.9) | 264 | 99.3 (97.3–99.9) | 0.176 |
| Yes | 14 | 1.6 (0.89–2.71) | 12 | 2.0 (1.0–3.5) | 2 | 0.7 (0.1–2.7) | |
| Alcohol consumption | |||||||
| No | 240 | 27.8 (24.8–30.9) | 179 | 30.0 (26.3–33.9) | 61 | 22.9 (18.0–28.5) | 0.032* |
| Yes | 622 | 72.2 (69.0–75.1) | 417 | 70.0 (66.1–73.6) | 205 | 77.1 (71.5–82.0) | |
| Sedentary lifestyle | |||||||
| No | 286 | 33.2 (30.0 - 36.4) | 206 | 34.6 (30.7 - 38.5) | 80 | 30.1 (24.6 - 36.0) | 0.196 |
| Yes | 576 | 66.8 (63.5 - 69.9) | 390 | 65.4 (61.5 - 69.2) | 186 | 69.9 (64.0 - 75.4) | |
| Altered BPc | |||||||
| No | 712 | 82.6 (79.8–85.0) | 499 | 83.7 (80.5–86.6) | 213 | 80.1 (74.8–84.7) | 0.192 |
| Yes | 150 | 17.4 (14.9–20.1) | 97 | 16.3 (13.4–19.5) | 53 | 19.9 (15.3–25.2) | |
| Altered WCd | |||||||
| No | 741 | 86.0 (83.4–88.2) | 523 | 87.7 (84.8–90.2) | 218 | 81.9 (76.8–86.3) | 0.024* |
| Yes | 121 | 14.0 (11.7–16.5) | 73 | 12.3 (9.7–15.1) | 48 | 18.1 (13.6–23.2) | |
| Overweight | |||||||
| No | 682 | 79.1 (76.2–81.8) | 484 | 81.2 (77.8–84.3) | 198 | 74.4 (69.8–79.6) | 0.024* |
| Yes | 180 | 20.9 (18.2–23.8) | 112 | 18.8 (15.7–22.2) | 68 | 25.6 (20.4–31.2) | |
aPearson’s chi-squared test; bTwo individuals did not respond; cBlood pressure; dWaist circumference
*Statistically significant at p < 0.05