|
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
