2.3. Western Ontario and McMaster Universities Osteoarthritis Index Questionnaire
GROUP B
The mean WOMAC score at baseline was comparable in the 2 groups, with no statistical differences between Group A and Group B, at 45.6 ± 15.1 and 45.8 ± 20.1, respectively. An improvement in the score at 1-, 3-, and 6-month follow-up was recorded for both groups: at 1-month follow-up it was 18.7 ± 14.3 in Group A and 14.0 ± 13.1 in Group B; at 3 months follow-up it was 17.7 ± 14.0 and 14.8 ± 16.4, respectively; and at 6 months it was 20.9 ± 15.8 and 17.9 ± 16.7 (see The interaction effects of group and time were statistically significant on the outcome (