| 1 | A | B | C | D | E | F | G |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 2 | selected characteristics and mean plasma vitamin c concentrations, household population aged 20 to 79, canada excluding territories, 2012/2013 |  |  |  |  |  |  |
| 3 | characteristic | prevalence |  |  | mean vitamin c concentration |  |  |
| 4 |  | % | 95% confidence interval |  | μmol/l | 95% confidence interval |  |
| 5 |  |  | from | to |  | from | to |
| 6 | total | 100.0 | .. | .. | 53 | 50 | 56 |
| 7 | sex |  |  |  |  |  |  |
| 8 | men | 49.8 | 48.9 | 50.7 | 47 | 43 | 52 |
| 9 | women | 50.2 | 49.3 | 51.1 | 59 | 55 | 63 |
| 10 | age group |  |  |  |  |  |  |
| 11 | 20 to 39 | 37.1 | 36.0 | 38.1 | 54 | 50 | 58 |
| 12 | 40 to 59 | 40.1 | 39.3 | 40.8 | 51 | 47 | 55 |
| 13 | 60 to 79 | 22.8 | 22.3 | 23.4 | 56 | 52 | 59 |
| 14 | race |  |  |  |  |  |  |
| 15 | white | 75.9 | 63.3 | 85.3 | 54 | 51 | 56 |
| 16 | other | 24.1 | 14.7 | 36.7 | 52 | 46 | 58 |
| 17 | household income tertile |  |  |  |  |  |  |
| 18 | lower | 32.1 | 26.6 | 38.1 | 50 | 45 | 55 |
| 19 | middle | 30.2 | 25.1 | 35.9 | 54 | 51 | 57 |
| 20 | higher | 37.7 | 33.1 | 42.5 | 55 | 51 | 59 |
| 21 | education |  |  |  |  |  |  |
| 22 | less than college/university graduation | 31.0 | 26.2 | 36.3 | 46 | 42 | 49 |
| 23 | college/university graduation | 69.0 | 63.7 | 73.8 | 56 | 54 | 59 |
| 24 | smoking |  |  |  |  |  |  |
| 25 | daily/occasional | 20.0 | 16.0 | 24.7 | 45 | 40 | 50 |
| 26 | non-smoker | 80.0 | 75.3 | 84.0 | 55 | 52 | 58 |
| 27 | body mass index |  |  |  |  |  |  |
| 28 | neither overweight nor obese | 38.1 | 32.1 | 44.5 | 58 | 54 | 63 |
| 29 | overweight | 36.3 | 31.2 | 41.8 | 53 | 49 | 58 |
| 30 | obese | 25.6 | 20.0 | 32.1 | 45 | 42 | 49 |
| 31 | vitamin c-containing supplement use |  |  |  |  |  |  |
| 32 | no | 78.2 | 71.1 | 83.9 | 49 | 46 | 52 |
| 33 | yes | 21.8 | 16.1 | 28.9 | 69 | 65 | 73 |
| 34 | fruit juice consumption |  |  |  |  |  |  |
| 35 | daily | 24.5 | 19.7 | 30.0 | 59 | 55 | 62 |
| 36 | at least once a week | 39.4 | 33.9 | 45.1 | 53 | 49 | 57 |
| 37 | at least once a month | 15.8 | 11.8 | 20.9 | 51 | 46 | 57 |
| 38 | less than once a month or never | 20.4 | 17.7 | 23.3 | 49 | 43 | 55 |
| 39 | fruit drink consumption |  |  |  |  |  |  |
| 40 | at least once a week | 9.2 | 7.4 | 11.4 | 49 | 43 | 56 |
| 41 | at least once a month | 8.2 | 4.1 | 15.6 | 45 | 36 | 55 |
| 42 | less than once a month or never | 82.6 | 75.5 | 88.0 | 54 | 52 | 57 |
| 43 | citrus fruit consumption |  |  |  |  |  |  |
| 44 | daily | 16.0 | 12.3 | 20.6 | 58 | 52 | 64 |
| 45 | at least once a week | 44.3 | 38.6 | 50.1 | 55 | 52 | 58 |
| 46 | at least once a month | 21.9 | 18.4 | 25.8 | 51 | 46 | 56 |
| 47 | less than once a month or never | 17.9 | 13.9 | 22.6 | 46 | 39 | 52 |

Question: what was the percentage of individuals reported having taken a vitamin c-containing supplement in the previous month?
Answer: 21.8

Question: what was the percentage of individuals drank fruit juice daily?
Answer: 24.5

Question: what was the percentage of individuals ate citrus fruit daily?
Answer: 16

Question: what was the mean plasma vitamin c concentration of canadians aged 20 to 79?
Answer: 53.666667

Question: what was the difference between users of vitamin c-containing supplements of mean concentrations and those of non-users?
Answer: 20

Question: what was the prevalence of individuals were men?
Answer: 49.8

Question: what was the prevalence of individuals were daily or occasional smokers?
Answer: 20

Question: what was the prevalence of individuals were obese?
Answer: 25.6