. Author manuscript; available in PMC: 2025 Mar 1.

Published in final edited form as: Osteoarthritis Cartilage. 2023 Sep 19;32(3):329–337. doi: 10.1016/j.joca.2023.09.007

Table 1:

Summary statistics of the JoCoOA and FNIH cohorts.

Baseline Characteristics	JoCoOA Controls	FNIH OA Cases
Total n	127	596
Female n (%)	80 (63%)	350 (59%)
Age median (years) [Min, Max]	59.0 [45.0, 95.0]	61.0 [45.0, 79.0]
BMI median (kg/m²) [Min, Max]	28.2 [20.0, 54.4]	30.2 [18.6,46.7]
Race
Other non-White	0 (0%)	11 (2%)
White	85 (67%)	474 (79%)
Black	42 (33%)	108 (18%)
Asian	0 (0%)	5 (1%)
Knee KL grade
0	127 (100%)	0 (0%)
1	0 (0%)	75 (12.6%)
2	0 (0%)	303 (50.8%)
3	0 (0%)	218 (36.6%)
WOMAC pain mean (SD)	1 (2.5)^*	12.0 (15.5)^*

KL: Kellgren Lawrence grade knee OA

WOMAC: Western Ontario and McMaster Universities Arthritis Index pain score normalized on a 0–100 scale

The majority (76%) of JoCoOA controls had baseline WOMAC pain scores of 0; a total of 231 (39%) of FNIH cases had baseline WOMAC pain scores of 0.

The random parsing led to well-balanced of training and testing sets that were not significantly different from the overall combined cohort shown in the Table (data not shown).