Table 3.
Average Time Joints Returned for a 2nd HA Injection, in Days, Stratified by Group
| Group | Joints, n | Mean ± SD | df | F | p-Value |
|---|---|---|---|---|---|
| Joint Injected | |||||
| Knee | 82 | 507.5 ± 345.0 | 2, 154 | 1.41 | 0.2480 |
| Hip | 73 | 423.5 ± 293.0 | |||
| Shoulder | 2 | 375.5 ± 174.7 | |||
| Age | |||||
| <40 | 6 | 399 ± 168.4 | 4, 152 | 1.08 | 0.3697 |
| 40–49 | 23 | 455.3 ± 317.3 | |||
| 50–59 | 62 | 507.7 ± 396.4 | |||
| 60–69 | 46 | 479.8 ± 251.4 | |||
| >70 | 20 | 343.7 ± 219.0 | |||
| Gender | |||||
| Male | 73 | 447.1 ± 327.5 | 1, 155 | 0.51 | 0.4763 |
| Female | 84 | 483.9 ± 317.5 | |||
| KL grade | |||||
| 2 | 60 | 515 ± 340.4 | 2, 154 | 3.53 | 0.0316 |
| 3 | 57 | 496.0 ± 357.6 | |||
| 4 | 40 | 352.8 ± 192.1 |
Notes: The values are expressed in days, unless indicated otherwise.
Abbreviations: n, number; SD, standard deviation; df, degrees of freedom.