Table 4. Weight change patterns and functional limitation in stair climbing of newly-diagnosed knee OA patients.
| Weight at age 40 (kg) |
Weight at diagnosis (kg) |
unnecessary* | sometimes necessary |
always necessary |
Model 3† | |
| n (%) | n (%) | n (%) | OR (95% CI) | p value | ||
| -51.9 | -54.9 | 15 (44) | 37 (32) | 27 (25) | 1 | |
| -51.9 | 55.0+ | 4 (12) | 19 (17) | 18 (17) | 1.29 (0.60-2.79) | 0.514 |
| 52.0+ | -54.9 | 2 (6) | 13 (11) | 14 (13) | 2.18 (0.88-5.37) | 0.092 |
| 52.0+ | 55.0+ | 13 (38) | 46 (40) | 50 (46) | 1.86 (0.98-3.53) | 0.057 |
* : Outcome is the same as that of Table 2.
† : Model included same variables as mentioned in the footnote of model 2 in Table 2 except weight at diagnosis and weight at age 40 years, which were replaced by weight change patterns. Weight at age 40 and at diagnosis were treated as dichotomous variables with a median cut-off value.