. Author manuscript; available in PMC: 2022 Aug 1.

Published in final edited form as: Skeletal Radiol. 2021 Apr 9;51(2):363–373. doi: 10.1007/s00256-021-03773-0

Table 2:

Distribution of demographic, clinical, and radiographic risk factors for all knees, knees without pain progression, and knees with pain progression in the hold-out testing dataset.

Risk Factor	All Knees (N=500)	Knees Without Progression (N=245)	Knees With Progression (N=255)	^*P-Value

Age in Years (Mean, SD)	60.8, 9.3	61.0, 9.4	60.6, 9.1	0.861
Gender (Number Female, %)	299, 59.8	146, 59.6	153, 60.0	0.996
Race (Number Caucasian, %)	395, 79.0	186, 75.9	209, 81.9	0.892
BMI in km/m² (mean, SD)	28.6, 5.1	28.0, 4.8	29.2, 5.4	0.015
WOMAC Score (Mean, SD)	10.7, 15.7	13.0, 18.1	8.3, 12.4	0.093
KL Grade (Mean, SD)	1.2, 1.2	1.0, 1.2	1.4, 1.2	< 0.001

SD: Standard Deviation

BMI: Body Mass Index

WOMAC: Western Ontario and McMaster Universities Osteoarthritis Index Pain Score

KL: Kellgren-Lawrence

P-Values for Difference Between Knees Without and With Pain Progression