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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
| 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. |
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