geometric means of urinary bpa concentrations, by selected characteristics, household population aged 6 to 17, canada, 2007/2009 and 2009/2011
Table:
characteristics
geometric mean
95% confidence interval

from
to

total
1.3
1.1
1.4

age group

6 to 8
1.8
1.6
2.1

9 to 11
1.4
1.2
1.7

12 to 14
1.2
1.0
1.4

15 to 17
0.9
0.8
1.1

sex

male
1.2
1.1
1.4

female
1.3
1.2
1.5

time of urine collection

morning
1.1
1.0
1.3

afternoon
1.5
1.3
1.7

evening
1.4
1.0
1.7

ethnicity

white
1.3
1.2
1.5

non-white
1.3
1.0
1.6

exposure to second-hand smoke

once a week or less
1.2
1.1
1.4

every day or almost every day
1.6
1.4
2.0

household income

low/lower-middle
1.7
1.4
2.0

upper-middle
1.2
1.0
1.4

highest
1.2
1.1
1.4

household education

secondary school graduation or less
1.3
1.0
1.6

at least some postsecondary
1.3
1.1
1.5

body mass index

neither overweight nor obese
1.3
1.2
1.5

overweight
1.3
1.0
1.7

obese
1.2
1.0
1.4

Provide the shortest accurate answer you can to the following question, based only on the table data. Enclose the answer in the list of the following JSON object {"answer": ["YOUR ANSWER"]}. If more than one item applies, separate items with commas. Caption of the table: 'geometric means of urinary bpa concentrations, by selected characteristics, household population aged 6 to 17, canada, 2007/2009 and 2009/2011'. Please answer the question according to the table: What was the mean urinary bpa concentration of the sample?

{"answer": ["1.3"]}