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Table 4
Adjusted least squares geometric means (LSGMs) of urinary bisphenol A concentrations, by selected characteristics, household population aged 6 to 79 years, Canada, March 2007 to February 2009
| Characteristics | LSGM§ (μg/L) | 95% confidence interval | |
|---|---|---|---|
| from | to | ||
| Highest level of education in household (p=0.293) | |||
| Less than secondary graduation | 1.14 | 0.90 | 1.43 |
| Secondary graduation | 1.18 | 1.03 | 1.36 |
| Some postsecondary | 1.33* | 1.20 | 1.47 |
| Postsecondary graduation† | 1.15 | 1.08 | 1.22 |
| Household income adjusted for household size‡(p=0.062) | |||
| First quartile ($25,000 or less) | 1.22 | 1.08 | 1.39 |
| Second quartile (more than $25,000 to $41,000) | 1.16 | 1.07 | 1.27 |
| Third quartile (more than $41,000 to $64,000) | 1.24* | 1.12 | 1.37 |
| Fourth quartile (more than $64,000)† | 1.04 | 0.97 | 1.12 |
| Country of birth (p=0.473) | |||
| Outside Canada | 1.12 | 0.99 | 1.26 |
| Canada† | 1.17 | 1.09 | 1.26 |
| BMI status (p=0.311) | |||
| Neither overweight nor obese† | 1.12 | 1.00 | 1.26 |
| Overweight | 1.18 | 1.12 | 1.25 |
| Obese | 1.21 | 1.14 | 1.30 |
| † reference category * significantly different from estimate for reference category (p < 0.05 adjusted for number of comparisons) ‡ adjusted using 40/30 formula; adjusted household incomes for all respondents ranked and divided into quartiles § adjusted for age group, sex, time of day of urine collection, and creatinine concentration; age groups 40 to 59 and 60 to 79 combined Source: 2007 to 2009 Canadian Health Measures Survey. |
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