Table 2.
Variables associated with mean size of largest polyp (mm) in each age group of patients.*
| Age Group | |||||
|---|---|---|---|---|---|
| Variable | < 50 n = 3097 | 50-59 n = 22859 | 60-69 n = 14913 | 70-79 n = 6991 | 80 + n = 1087 |
| Gender | |||||
| Male | 5.88 (5.72-6.0)** | 6.1 (6.04-6.16) | 6.64 (6.56-6.72) | 6.88 (6.76-7.00) | 7.45 (7.08-7.82) |
| Female | 5.74 (5.56-5.92) | 5.76 (5.69-5.83) | 6.15 (6.06-6.24) | 6.64 (6.51-6.77) | 7.03 (6.68-7.38) |
| Site | |||||
| Academic | 5.43 (5.07-5.79) | 5.62 (5.47-5.77) | 6.03 (5.83-6.23) | 6.18 (5.92-6.44) | 6.70 (5.83-7.57) |
| Community/HMO | 5.88 (5.75-6.01) | 5.99 (5.94-6.04) | 6.51 (6.44-6.58) | 6.87 (6.77-6.97) | 7.27 (7.00-7.54) |
| VA/Military | 5.68 (5.28-6.08) | 5.98 (5.85-6.11) | 6.28 (6.12-6.44) | 6.60 (6.27-6.93) | 7.60 (6.37-8.83) |
| Race | |||||
| White | 5.77 (5.65-5.89) | 5.93 (5.89-5.97) | 6.40 (6.34-6.46) | 6.74 (6.65-6.83) | 7.19 (6.94-7.44) |
| Black | 6.63 (5.95-7.31) | 6.46 (6.26-6.66) | 7.21 (6.89-7.53) | 7.66 (7.09-8.23) | 9.05 (6.94-11.16) |
| Polyp location | |||||
| Distal | 5.60 (5.46-5.74) | 5.79 (5.73-5.85) | 6.19 (6.12-6.26) | 6.54 (6.42-6.66) | 6.91 (6.58-7.24) |
| Proximal | 6.18 (5.98-6.38) | 6.20 (6.13-6.27) | 6.75 (6.66-6.84) | 7.02 (6.88-7.16) | 7.55 (7.17-7.93) |
| Number of polyps | |||||
| Single | 5.12 (5.00-5.24) | 5.21 (5.16-5.26) | 5.53 (5.47-5.59) | 5.85 (5.75-5.95) | 6.29 (6.01-6.57) |
| Multiple | 7.52 (7.25-7.79) | 7.58 (7.49-7.67) | 8.10 (7.99-8.21) | 8.44 (8.27-8.61) | 9.02 (8.54-9.50) |
| Family history | |||||
| Negative | 5.80 (5.53-6.07) | 5.93 (5.88-5.98) | 6.43 (6.36-6.50) | 6.84 (6.74-6.94) | 7.29 (7.01-7.57) |
| Positive | 5.82 (5.69-5.89) | 6.07 (5.97-6.17) | 6.50 (6.37-6.63) | 6.49 (6.29-6.69) | 7.04 (6.47-7.61) |
| All patients | 5.82 (5.70-5.94) | 5.96 (5.92-6.00) | 6.44 (6.38-6.50) | 6.78 (6.69-6.87) | 7.25 (7.00-7.50) |
*Group data are based upon averages of the single largest polyp in millimeters detected in each individual patient in that group. **Numbers in brackets = 95% confidence interval.