Table 1 Selected characteristics of the study population (n=5183), National Enhanced Cancer Surveillance System, Canada, 1994–1997
From: Specific fatty acid intake and the risk of pancreatic cancer in Canada
Cases ( n =462) | Controls ( n =4721) | |||
|---|---|---|---|---|
Characteristic | n | % | n | % |
Age (years) | ||||
30–34 | 5 | 1 | 186 | 4 |
35–39 | 8 | 2 | 264 | 6 |
40–44 | 18 | 4 | 333 | 7 |
45–49 | 28 | 6 | 448 | 9 |
50–54 | 48 | 10 | 426 | 9 |
55–59 | 58 | 13 | 486 | 11 |
60–64 | 85 | 18 | 701 | 15 |
65–69 | 115 | 25 | 914 | 19 |
70–74 | 97 | 21 | 963 | 20 |
Cigarette consumption (pack-years) | ||||
0 | 144 | 31 | 1767 | 38 |
>0–15 | 93 | 20 | 1384 | 29 |
>15 | 219 | 48 | 1517 | 32 |
Missing | 6 | 1 | 53 | 1 |
BMI 2 years prior to diagnosis (kg m−2) | ||||
<25 | 188 | 41 | 2235 | 47 |
25–29.9 | 173 | 37 | 1816 | 39 |
⩾30 | 101 | 22 | 670 | 14 |
Physical activity (total number of hours week−1) | ||||
<21 | 135 | 29 | 1168 | 25 |
21–23 | 228 | 49 | 2550 | 54 |
⩾23 | 99 | 22 | 1003 | 21 |
Daily fat intakea (mean±s.d. in g) | 61±35 | 55±28 | ||
Daily energy intakeab (mean±s.d. in kcal) | 1862±757 | 1723±642 | ||
