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. Author manuscript; available in PMC: 2020 Jan 1.
Published in final edited form as: Arthritis Rheumatol. 2018 Nov 29;71(1):73–81. doi: 10.1002/art.40660

Table 1:

Baseline Characteristics of cohort

Overall
n=221
Change in Effusion-Synovitis over 18 months
Persistently minimal
n=100
Intermittent
n=74
Persistently extensive
n=47

 Age  59 (+/−7) 59 (+/−7) 58 (+/−8) 58 (+/−8)
 BMI kg/m2  30 (+/−6) 28 (+/−5) 30 (+/−6) 31 (+/−7)
 KOOS Pain  46 (+/−16) 44 (+/−16) 44 (+/−15) 54 (+/−15)
 KOOS Function  37 (+/−18) 34 (+/−17) 35 (+/−17) 45 (+/−20)
 Female, n (%)  129 (58%) 59 (59%) 33 (45%) 37 (79%)
 Received APM, n (%)  143 (65%) 64 (64%) 46 (62%) 33 (70%)
 KL grade 0, n (%)  50 (23%) 26 (26%) 17 (23%) 7 (15%)
 KL grade 1, n (%)  51 (23%) 24 (24%) 23 (31%) 4 (9%)
 KL grade 2, n (%)  58 (26%) 27 (27%) 14 (19%) 17 (36%)
 KL grade 3, n (%)  62 (28%) 23 (23%) 20 (27%) 19 (40%)
 Cartilage damage size ≤75%, n (%)  135 (61%) 65 (65%) 46 (62%) 24 (51%)
 Cartilage damage size >75%, n (%)  86 (39%) 35 (35%) 28 (38%) 23 (49%)
 Cartilage damage depth <10%, n (%)  132 (60%) 73 (73%) 39 (53%) 20 (43%)
 Cartilage damage depth ≥ 10%, n (%)  89 (40%) 27 (27%) 35 (47%) 27 (57%)

Mean (SD) unless otherwise noted. BMI; body mass index. KOOS; knee injury and osteoarthritis outcome score. APM; arthroscopic partial meniscectomy