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Table 1 Characteristics of the sample and household population aged 12 to 79 years, Canada, 2007 to 2009

From: Solar ultraviolet-B radiation and vitamin D: a cross-sectional population-based study using data from the 2007 to 2009 Canadian Health Measures Survey

Variable

Sample (Unweighted)

Population (Weighted)

 

n

% (95% CI)

Sex

  

 Female

2289

50.0 (49.2, 50.7)

  Male

2109

50.0 (49.6, 50.5)

Age

  

 12-19 years

950

12.0 (11.6, 12.4)

 20-59 years

2375

69.7 (69.1, 70.4)

 60-79 years

1073

18.3 (18.0, 18.5)

Ethnicity

  

 White

3696

81.7 (74.4, 88.8)

 Non-White

696

18.3 (11.0, 25.5)

Sun Exposure

  

 < 30 min/d

833

19.2 (16.1, 22.2)

 ≥ 30 min/d and < 2 h/d

1210

27.5 (24.5, 30.4)

 ≥ 2 h/d

2350

53.4 (48.6, 58.0)

Sunscreen Use*

  

 Never or rarely

1754

49.3 (45.4, 53.0)

 Sometimes

672

18.9 (16.9, 21.0)

 Often or always

1134

31.9 (28.7, 35.0)

Vitamin D Supplementation

 

 No

3826

85.1 (78.8, 88.5)

 Yes

572

14.9 (12.4, 20.4)

Milk Consumption

  

 < Once/d

1790

42.9 (40.7, 45.2)

 Once/d

1425

33.7 (32.5, 34.9)

 > Once/d

1183

23.4 (21.1, 25.8)

Salt Water Fish Consumption

  

 < Once/week

2178

49.7 (45.9, 53.5)

 Once/week

1164

25.8 (24.0, 27.6)

 > Once/week

1056

24.5 (21.5, 27.5)

Body Mass Index

  

 < 25 kg/m2

1930

42.3 (37.7, 46.6)

 ≥ 25 and < 30 kg/m2

1453

34.7 (31.5, 37.2)

 ≥ 30 kg/m2

983

23.0 (19.6, 25.9)

Physical Activity Index

  

 Inactive

2120

51.8 (46.3, 57.4)

 Moderately Active

1107

24.5 (21.8, 27.1)

 Active

1170

23.7 (20.1, 27.3)

Cigarette Smoking

  

 Non-Smoker

3605

80.0 (77.0, 82.2)

 Current Smoker

792

20.0 (18.1, 22.7)

Alcohol Use

  

 Non-Drinker

1007

18.0 (16.4, 20.3)

 Current Drinker

3390

82.0 (79.9, 83.4)

Season

  

 January to March

896

21.8F (0.0, 43.6)

 April to June

1269

31.4F (4.7, 58.1)

 July to September

1063

20.5F (5.8, 35.2)

 October to December

1170

26.3F (8.0, 44.6)

Latitude

  

 43-44 oN

1615

38.8 (37.8, 39.8)

 45-47 oN

1548

30.9 (30.7, 31.1)

 49-54 oN

1235

30.3 (29.8, 30.8)

  1. *Sunscreen use was collected only for participants who reported ≥ 30 min/d sun exposure.
  2. FInterpret with caution (coefficient of variation 16.6-33.3%).