Table 2.
Demographic and health-related characteristics by statin use
| Characteristics | No Statin Usea (n=265) N (%) |
Ever Statin Usea (n=146) N (%) |
p-value |
|---|---|---|---|
| Age (years) | |||
| 30–54 | 89 (33.6) | 38 (26.0) | 0.02d |
| 55–69 | 100 (37.7) | 76 (52.1) | |
| ≥70 | 76 (28.7) | 32 (21.9) | |
| Sex | |||
| Men | 205 (77.4) | 129 (88.4) | <0.01d |
| Women | 60 (22.6) | 17 (11.6) | |
| Smoking Status | |||
| Never | 108 (40.8) | 40 (27.4) | <0.01d |
| Ever | 157 (59.3) | 106 (72.6) | |
| Smoking (pack years)b | |||
| Mean ± std dev | 16.4 ± 23.9 | 22.5 ± 24.5 | 0.02e |
| Median (min - max) | 3.0 (0–135) | 17 (0–122.5) | |
| Educationb | |||
| No college education | 89 (33.7) | 46 (31.5) | 0.65d |
| Any college education | 175 (66.3) | 100 (68.5) | |
| Waist-to-hip ratioc | |||
| First quartile | 63 (23.9) | 41 (28.3) | 0.27d |
| Second quartile | 66 (25.0) | 35 (24.1) | |
| Third quartile | 72 (27.3) | 28 (19.3) | |
| Fourth quartile | 63 (23.9) | 41 (28.3) | |
| NSAID use as of baselineb | |||
| Never | 123 (46.6) | 39 (26.7) | <0.01d |
| Former | 54 (20.5) | 25 (17.1) | |
| Current | 87 (33.0) | 82 (56.2) | |
| High Grade Dysplasia at or before baseline | |||
| No | 210 (79.3) | 118 (80.8) | 0.70d |
| Yes | 55 (20.8) | 28 (19.2) |
a
Ever use of statins defined by current use at baseline interview or over study-follow-up
b
1 missing value for smoking history, education, and use of NSAIDs among never--users
c
1 missing value for waist-to-hip ratio among never-users, as well as 1 missing value among ever-users
d
X2 test of overall distribution
e
T-test assuming unequal variance