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Table 2
Adjusted least squares geometric means (LSGMs) of blood lead concentrations, by selected characteristics, household population aged 6 to 79 years, Canada, March 2007 to February 2009

Standard table symbols

Characteristics LSGM (μg/dL)‡‡ 95% confidence interval
from to
Highest level of education in household (p=0.077)
Less than secondary graduation 1.49* 1.30 1.70
Secondary graduation 1.27 1.17 1.37
Some postsecondary 1.31 1.19 1.43
Postsecondary graduation 1.32 1.22 1.43
Household income adjusted for household size†† (p=0.005)
First quartile ($25,000 or less) 1.49* 1.35 1.63
Second quartile (more than $25,000 to $41,000) 1.32 1.17 1.48
Third quartile (more than $41,000 to $64,000) 1.27 1.19 1.35
Fourth quartile (more than $64,000) 1.27 1.19 1.36
Country of birth (p=0.001)      
Outside Canada 1.54* 1.42 1.68
Canada 1.29 1.19 1.39
Age of dwelling (p=0.006)
Less than 20 years 1.25 1.15 1.37
20 to less than 50 years 1.32 1.23 1.42
50 years or more 1.52* 1.36 1.70
Smoking status§ (p=0.000)      
Never 1.27 1.16 1.39
Former 1.40* 1.30 1.50
Current 1.66* 1.52 1.80
Frequency of alcohol consumption in past 12 months§ (p=0.000)
Less than once a week 1.27 1.17 1.37
1 to 3 times a week 1.39* 1.28 1.52
4 to 6 times a week 1.72* 1.55 1.90
Daily 1.89* 1.75 2.03
reference category
* significantly different from estimate for reference category (p < 0.05 adjusted for number of comparisons)
adjusted for age group and sex
§ children younger than 12 excluded from model
††adjusted using 40/30 formula; adjusted household incomes for all respondents ranked and divided into quartiles
‡‡ μg/dL converts to μmol/L by multiplying by 0.0483
Source: 2007 to 2009 Canadian Health Measures Survey.