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Table 3 Hip OA progression by individual definitions

From: Racial differences in associations between baseline patterns of radiographic osteoarthritis and multiple definitions of progression of hip osteoarthritis: the Johnston County Osteoarthritis Project

OA progression indicators All participants Caucasian AA P a
n (%) n (%) n (%)
Radiographic OA progressionb (n = 2,803 hips) 411 (14.7) 332 (16.0) 79 (10.8) 0.0007
Range of motion progressionc (n = 2,644 hips) 404 (15.3) 279 (14.0) 125 (19.3) 0.0012
Incident hip replacement at T1 (n = 2,843 hips) 12 (0.4) 10 (0.5) 2 (0.3) 0.742d
Disability progressione (n = 1,401 participants) 445 (31.8) 302 (29.0) 143 (39.7) <0.0001
Any progression (n = 2844 hips) 1,406 (49.4) 1,003 (47.6) 403 (54.8) 0.0008
  1. aChi-square or Fisher’s exact test p value comparing Caucasians to African Americans (AA). bKellgren–Lawrence grade increased by at least 1 from time point 0 (T0) to time point 1 (T1). cInternal rotation decrease ≥10° in one or both hips. dFisher’s exact test p value. eHealth assessment questionnaire score increase > =0.2. OA osteoarthritis