Table 1.
Characteristics of Canadian children and adolescents in the Canadian Health measures Survey, 2007–2009
| |
Age, years |
|||||
|---|---|---|---|---|---|---|
| |
6 to 11 (n = 1058) |
12 to 17 (n = 792) |
||||
| n | Mean or % | 95 % CI | n | Mean or % | 95 % CI | |
| Boys, n (%) |
531 |
50.5 |
49.7, 51.4 |
416 |
54.2 |
51.9, 56.5 |
| Mean systolic blood pressure (mmHg) |
1058 |
93.2 |
92.4, 93.9 |
792 |
98.7 |
97.0, 100.3 |
| Mean diastolic blood pressure (mmHg) |
1058 |
60.5 |
59.7, 61.4 |
792 |
62.5 |
61.2, 63.9 |
| Mean systolic blood pressure z-scores |
1058 |
−0.70 |
−0.75,-0.65 |
792 |
−1.20 |
−1.38, -1.08 |
| Mean diastolic blood pressure z-scores |
1058 |
0.07 |
0.01, 0.13 |
792 |
−0.22e |
−0.34, -0.10 |
| Mean heart rate (bpm) |
1058 |
75 |
74, 77 |
792 |
80 |
78, 81 |
| Mean body mass index (kg/m2) |
1058 |
17.8 |
17.6, 18.0 |
792 |
22.0 |
21.1, 23.0 |
| Mean body mass index z-scores (BMIZ) |
1058 |
0.51 |
0.41, 0.61 |
792 |
0.47e |
0.22, 0.73 |
| Body mass index category, n (%) | ||||||
| Normal weight (BMIZ < 84 percentile) |
733 |
67 |
63.2, 70.7 |
558 |
69.2 |
61.1, 77.3 |
| Overweight (84 ≤ BMIZ < 97.7 percentile) |
195 |
20.2 |
14.9, 25.4 |
143 |
15.8 |
11.6, 19.9 |
| Obese (BMIZ ≥ 97.7 percentile) |
131 |
12.9 |
9.9, 15.8 |
91 |
15.1e |
8.6, 21.6 |
| Physically active, n (%) |
888 |
83.6 |
80.5, 86.6 |
424 |
55.2 |
49.3, 61.2 |
| Family history of hypertension, n (%) |
161 |
13.9 |
11.2, 16.5 |
173 |
20.5 |
16.8, 24.2 |
| Low family income, n (%) |
74 |
6.9e |
3.6, 10.2 |
43 |
7.0e |
3.2, 10.8 |
| Post-secondary educated parents, n (%) |
856 |
79.9 |
74.2, 85.6 |
605 |
73.1 |
65.5, 80.8 |
| Ethnicity - whites, n (%) |
814 |
75.4 |
62.0, 88.7 |
635 |
75.6 |
65.6, 85.6 |
| Daily smoking, n (%) | – | – | – | 53 | 6.9e | 2.1, 11.7 |
Mean and proportion (%) were estimated using bootstrap method; CI, confidence interval.
e, CV coefficient of variation of 16.6 % − 33.3 %, interpret with caution.