Table 2.
Characteristics of cases and controls by NSAID use. Number (percentage) is shown unless otherwise indicated.
| Cases | Controls | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Never users (N = 25) | Ever users (N=46) | P-value* | Never users (N = 10) | Ever users (N = 61) | P-value* | |||||
|
| ||||||||||
| Age, years mean (SD) | 52 | (12) | 58 | (11) | .02 | 54 | (10) | 58 | (10) | .30 |
| Smoking Status | .77 | .68 | ||||||||
| Ever | 20 | (80) | 35 | (76) | 7 | (70) | 48 | (79) | ||
| Never | 5 | (20) | 11 | (24) | 3 | (30) | 13 | (21) | ||
| Pack-years | .54 | .13 | ||||||||
| <40 | 6 | (30) | 8 | (23) | 3 | (43) | 12 | (25) | ||
| 40–60 | 4 | (20) | 12 | (34) | 3 | (43) | 8 | (17) | ||
| ≥60 | 9 | (45) | 12 | (34) | 1 | (14) | 23 | (48) | ||
| Unknown | 1 | (5) | 3 | (9) | 0 | (0) | 5 | (10) | ||
| Race | .40 | .11 | ||||||||
| Caucasian | 19 | (76) | 40 | (87) | 8 | (80) | 47 | (77) | ||
| African American | 5 | (20) | 4 | (9) | 0 | (0) | 10 | (16) | ||
| Other | 1 | (4) | 2 | (4) | 2 | (20) | 4 | (7) | ||
| Alcohol Consumption | — | .55 | ||||||||
| Ever | 25 | (100) | 46 | (100) | 9 | (90) | 56 | (91) | ||
| Never | 0 | (0) | 0 | (0) | 1 | (10) | 4 | (7) | ||
| Unknown | 0 | (0) | 0 | (0) | 0 | (0) | 1 | (2) | ||
| Drink-years | .06 | .53 | ||||||||
| <20 | 4 | (16) | 14 | (31) | 3 | (34) | 13 | (24) | ||
| 20–40 | 10 | (40) | 7 | (15) | 3 | (33) | 10 | (18) | ||
| 40–60 | 1 | (4) | 8 | (17) | 1 | (11) | 8 | (14) | ||
| ≥60 | 9 | (36) | 15 | (33) | 1 | (11) | 17 | (30) | ||
| Unknown | 1 | (4) | 2 | (4) | 1 | (11) | 8 | (14) | ||
| Current BMI, mean (SE)† | 24 | (1.1) | 27 | (0.8) | .08 | 28 | (1.5) | 28 | (0.6) | .97 |
| Married or living as married | .01 | 0.99 | ||||||||
| Yes | 10 | (40) | 32 | (70) | 8 | (80) | 46 | (75) | ||
| No | 15 | (60) | 13 | (28) | 2 | (20) | 15 | (25) | ||
| Unknown | 0 | (0) | 1 | (2) | 0 | (0) | 0 | (0) | ||
| Education level | .42 | .99 | ||||||||
| <College | 15 | (60) | 23 | (50) | 2 | (20) | 15 | (24) | ||
| ≥College | 10 | (40) | 23 | (50) | 8 | (80) | 45 | (74) | ||
| Unknown | 0 | (0) | 0 | (0) | 0 | (0) | 1 | (2) | ||
*P-values were computed using t-tests for continuous characteristics, Fisher's exact test for categorical characteristics with cell frequencies of 5 or less, and chi-square tests for all other characteristics. Missing values were excluded from the P-value computation.
†BMI comparisons were age adjusted. Means are shown for a 56-year-old subject.
Missing data: BMI unknown for 1 case and 1 control.
SD: Standard Deviation; SE: Standard Error.