Table 2.
Patient demographics
| Parameter | Patellar crepitus group | Control group | |
|---|---|---|---|
| Gender (male/female) | 18/42 | 18/42 | |
| Age (years) | Mean | 62.3 | 62.2 |
| SD | 10.8 | 10.6 | |
| Range | 23–84 | 36–82 | |
| 95% confidence interval | 59.50–65.07 | 59.51–64.96 | |
| Height (inches) | Mean | 66.3 | 66.5 |
| SD | 3.9 | 3.4 | |
| Range | 59–76 | 60–74 | |
| 95% confidence interval | 65.25–67.28 | 65.65–67.39 | |
| Body weight (pounds) | Mean | 186.2 | 187.4 |
| SD | 45.5 | 41.5 | |
| Range | 109–295 | 109–290 | |
| 95% confidence interval | 174.44–197.96 | 176.66,198.20 | |
| Body mass index (kg/m2) | Mean | 29.8 | 29.9 |
| SD | 7.1 | 7.0 | |
| Range | 19.9–51.4 | 19.9–49.0 | |
| 95% confidence interval | 27.96–31.63 | 28.10–31.71 | |