Table 2.
Distribution of selected variables among patients and controls
| Variable | No. cases (%) | No. controls (%) | Odds ratio (95% confidence interval) |
|---|---|---|---|
| Total | 892 (100) | 783 (100) | |
| Age at recruitment, years | |||
| < 50 | 123 (14) | 121 (15) | Matching factor |
| 51−60 | 262 (29) | 246 (31) | |
| 61−70 | 314 (35) | 270 (34) | |
| > 70 | 193 (22) | 146 (19) | |
| Sex | |||
| Female | 375 (42) | 318 (40) | Matching factor |
| Male | 517 (58) | 465 (59) | |
| Race | |||
| Non-Hispanic White | 795 (89) | 721 (92) | Matching factor |
| Hispanic | 51 (6) | 38 (5) | |
| African American | 46 (5) | 24 (3) | |
| Family history of cancera | |||
| No | 314 (35) | 357 (46) | 1.0 (reference) |
| Yes | 574 (65) | 423 (54) | 1.54 (1.27−1.88) |
| History of diabetes | |||
| None | 671 (75) | 702 (90) | 1.0 (reference) |
| <2 yearsb | 95 (11) | 20 (3) | 4.97 (3.03−8.14) |
| ≥2 years | 126 (14) | 61 (8) | 2.16 (1.56−2.97) |
| Smoking status | |||
| Non-smoker | 363 (41) | 390 (50) | 1.0 (reference) |
| ≤ 20 pack-years | 210 (24) | 200 (26) | 1.13 (0.89−1.44) |
| > 20 pack-years | 319 (36) | 193 (25) | 1.78 (1.41−2.23) |
| Body mass index (kg/m2)c | |||
| < 25.0 | 262 (52) | 300 (62) | 1.0 (reference) |
| 25.0−30.0 | 180 (35) | 155 (32) | 1.33 (1.01−1.74) |
| > 30.0 | 66 (13) | 26 (5) | 2.91 (1.79−4.71) |
a
Four cases and three controls had been adopted; this information was not available.
b
Years between diabetes and cancer diagnoses for cases or between diabetes diagnosis and study enrollment for controls.
c
Information was available for only 508 cases and 481 controls.