Table 2.
Age and BMI for the participants in the three groups
| Variable | Young healthy | Middle-aged control | Osteoarthritis | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Men | Women | p value | Men | Women | p value | Men | Women | p value | |
| For T1ρ and T2 comparisons | |||||||||
| Number | 20 | 13 | 43 | 65 | 18 | 25 | |||
| Age* (years) | 28 (26–29) | 29 (27–31) | 0.285 | 49 (46–51) | 51 (48–53) | 0.287† | 57 (52.7–61.8) | 58 (55–62) | 0.702† |
| BMI* (kg/m2) | 23 (22–24) | 22 (20–23) | 0.024 | 25 (24–26) | 24 (24–24) | 0.081† | 26 (24–27) | 25 (25–26) | 0.087† |
| KL | KL0 = 26, KL1 = 17 | KL0 = 30, KL1 = 35 | 0.168‡ | KL2 = 9, KL3 = 8, KL4 = 1 | KL2 = 10, KL3 = 12, KL4 = 3 | 0.693‡ | |||
| For gait mechanics comparisons | |||||||||
| Number | 15 | 10 | 29 | 49 | 13 | 16 | |||
| Age* (years) | 27 (25–30) | 29 (27–32) | 0.297 | 49 (45–52) | 51 (48–53) | 0.408† | 58 (52–63) | 62 (57–67) | 0.252† |
| BMI* (kg/m2) | 23 (22–24) | 22 (21–23) | 0.177 | 25 (24–26) | 24 (23–25) | 0.083† | 26 (24–28) | 24 (23–28) | 0.142† |
* Values are mean with 95% confidence intervals in parentheses; †p values from independent sample t-tests; ‡p value from chi square tests; BMI = body mass index; KL = Kellgren-Lawrence.