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Table 2 Treatment utilization for shoulder osteoarthritis patients by physician specialty (N = 572)

From: A comparison of one-year treatment utilization for shoulder osteoarthritis patients initiating care with non-orthopaedic physicians and orthopaedic specialists

   Total Study Sample
(N = 572)
Non-Orthopaedic Physician
(n = 98)
Orthopaedic Specialist
(n = 474)
p value
Days from index shoulder visit to OA diagnosis Mean 19.6 21.6 19.2 0.25*
(95% CI) (17.5, 21.8) (16.3, 26.9) (16.9, 21.6)  
Days from index shoulder visit to first treatment Mean 18.2 32.3 16.3 < 0.01*
(95% CI) (14.8, 21.5) (21.0, 43.6) (12.8, 19.7)  
First Treatment Initiated
 Physical therapy n (%) 66 (11.5) 13 (13.3) 53 (11.2) < 0.01
(95% CI)   (7.3, 21.6) (8.5, 14.4)  
 Injection n (%) 286 (50.0) 33 (33.7) 253 (53.4)  
(95% CI)   (24.4, 43.9) (48.8, 57.9)  
 Arthroscopic surgery n (%) 79 (13.8) 7 (7.1) 72 (15.2)  
(95% CI)   (2.9, 14.2) (12.1, 18.7)  
 Total joint replacement n (%) 25 (4.4) 2 (2.0) 23 (4.8)  
(95% CI)   (0.2, 7.1) (3.1, 7.2)  
 Watchful Waiting n (%) 116 (20.3) 43 (43.9) 73 (15.4)  
(95% CI)   (33.9, 54.3) (12.3, 19.0)  
Treatment ever receiveda
 Physical therapy n (%) 94 (16.4) 21 (21.4) 73 (15.4) 0.14
(95% CI)   (13.8, 30.9) (12.3, 19.0)  
 Injection n (%) 351 (61.4) 46 (46.9) 305 (64.3) < 0.01
(95% CI)   (36.8, 57.3) (59.8, 68.7)  
 Arthroscopic surgery n (%) 196 (34.3) 18 (18.4) 178 (37.5) < 0.01
(95% CI)   (11.3, 27.5) (33.2, 42.1)  
 Total joint replacement n (%) 52 (9.1) 4 (4.1) 48 (10.1) 0.08
(95% CI)   (1.1, 10.1) (7.5, 13.2)  
 Watchful Waiting n (%) 116 (20.3) 43 (43.8) 73 (15.4) < 0.01
(95% CI)   (33.9, 54.3) (12.3, 19.0)  
Number of PT sessions over treatment periodc Mean 1.2 1.2 1.2 0.81*
(95% CI) (1.1, 1.3) (1.0, 1.4) (1.1, 1.3)  
Number of injections over treatment periodb Mean 1.6 1.6 1.6 0.42*
(95% CI) (1.5, 1.7) (1.4, 1.9) (1.5, 1.7)  
Days from index shoulder visit to surgeryd Mean 65.4 96.9 62.5 < 0.01*
(95% CI) (58.0, 72.8) (62.6, 131.1) (55.1, 69.8)  
  1. aGroups are not mutually exclusive and will sum to greater than 100 %
  2. bAmong patients receiving at least one injection in the treatment period
  3. cAmong patients receiving at least one physical therapy session in the treatment period
  4. dAmong patients receiving arthroscopic surgery or total joint replacement in the treatment period
  5. *p-value produced from Wilcoxon rank-sum test
  6. p-value produced from Pearson’s chi-square test
  7. p-value produced from Fisher’s exact test