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. 2011 Aug 3;11:618. doi: 10.1186/1471-2458-11-618

Table 1.

Descriptive statistics for elementary and secondary school students

Elementary
n (%)
Secondary
n (%)
p-value
Socio-demographic
Grade
 Grade 7 506 (48.2) -
 Grade 8 583 (51.8)
 Grade 9 590 (21.6)
 Grade 10 654 (23.4)
 Grade 11 597 (24.3)
 Grade 12 638 (30.8)
Sex (female) 604 (48.2) 1272 (47.9) 0.91
Weight status (overweight/obese) 241 (26.7) 620 (24.8) 0.42
Years of highest parent education (yrs) (mean(SD)) 14.6 (1.6) 14.5 (1.7) 0.17
Parent born abroad (yes) 229 (32.2) 719 (33.0) 0.83
Having sibling (yes) 1011 (92.8) 2328 (93.9) 0.44
Having car at home (yes) 1053 (95.6) 2424 (97.0) 0.13
Having driver license (yes) - 1046 (42.2) -
Behavioural
MVPA (≥5 days/wk) 568 (53.9) 1105 (42.6) < 0.001
Screen time (> 2 hours/day) 539 (49.6) 1518 (61.2) < 0.001
Smoking in the past 12 months (occasional/regular smokers) 49 (5.3) 572 (22.4) < 0.001
Drinking in the past 12 months (occasional/regular drinkers) 567 (52.1) 1962 (78.8) < 0.001
Part-time job
 Did not work outside home - 1302 (53.5) -
 1-5 hours/wk - 301 (11.2)
 ≥6 hours/wk - 876 (35.3)
Extracurricular participation (yes) 838 (77.6) 1755 (70.8) 0.06
Psychological
Perceived physical health (excellent/good) 74 (7.6) 400 (17.7) < 0.001
Perceived weight status
 About right 779 (73.9) 1699 (65.9) < 0.001
 Too thin 84 (6.3) 218 (10.2)
 Too fat 216 (19.8) 555 (23.9)
Decision-making on mode choice (often/always) 340 (3.1.5) 956 (40.4) 0.001
Parents don't know where their children are in free time away from home (sometimes/seldom/never) 74 (7.9) 348 (15.9) < 0.001
Environmental
Travelled to school
 0-15 minutes 708 (68.3) 1570 (63.5) 0.13
 16-30 minutes 210 (18.7) 552 (23.9)
 ≥31 minutes 168 (13.0) 357 (12.6)
Travelled from school
 0-15 minutes 646 (61.4) 1202 (48.4) < 0.001
 16-30 minutes 253 (22.7) 738 (30.6)
 ≥31 minutes 184 (16.0) 533 (20.9)
Living in urban area (urban) 857 (84.7.0) 2075 (83.7) 0.86
Regions
 Toronto 112 (21.6) 256 (16.6) 0.07
 North 57 (5.7) 199 (6.6)
 West 304 (43.9) 857 (43.6)
 East 613 (28.9) 1167 (33.2)
Catholic school (yes) 376 (38.9) 935 (36.4) 0.80
Changing school in the last five years (yes) 419 (43.5) 752 (30.2) < 0.001
Moving home in the last five years (yes) 513 (48.5) 1031 (44.5) 0.24