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Table 1 Description of chiropractors for the total combined sample, and for COAST and O-COAST chiropractorsc

From: The profile of older adults seeking chiropractic care: a secondary analysis

  Total combined sample
(n = 91)
COAST Chiropractors
(n = 52)
O-COAST Chiropractors
(n = 39)
Comparisona between COAST and O-COAST
Female (%) 27 (29.7%) 14 (26.9%) 13 (33.3%) χ2 = 0.4, df = 1, p = 0.5
Mean age in years (range; SD) 43.1 (24–71; 10.3) 42.3 (24–64; 9.3) 44.1 (25–71; 11.7) t = −0.84, df = 89, p = 0.4
Mean years in practiceb (range, SD) (N = 89) 16.1 (1–45; 9.7) 16.3 (1–39; 8.5) 15.8 (2–45; 11.2) t = 0.82, df = 88, p = 0.8
Years since graduation (range, SD) 17.1 (1–45; 9.8) 16.9 (1–40; 8.7) 17.4 (3–45; 11.3) t = 0.8, df = 89, p = 0.8
   Less than 10 years 25 (27.5%) 13 (25.0%) 12 (30.8%) χ2 = 1.0, df = 2, p = 0.6
   Between 10 to 20 years 38 (41.8%) 24 (46.2%) 14 (35.9%)  
   Greater than 20 years 28 (30.8%) 15 (28.9%) 13 (33.3%)  
Country of chiropractic education:
 Australia 44 (48.4%) 44 (84.6%)  
 Canada 34 (37.4%) 1 (1.9%) 33 (84.6%) χ2 = 77.2, df = 4, < 0.0001
 United States 10 (11.0%) 4 (7.7%) 6 (15.4%)  
 United Kingdom 1 (1.1%) 1 (1.9%)  
 New Zealand 2 (2.2%) 2 (3.9%)  
Mean number of adult encounters (range; SD) 74.5 (7–105; 26.0) 73.9 (7–104; 26.6) 75.4 (13–105; 25.3) t = −0.3, df = 89, p = 0.8
Mean number of adult patients (range; SD) 62.2 (5–99; 24.8) 63.4 (7–95; 23.8) 60.5 (5–99; 26.3) t = 0.6, df = 89, p = 0.6
% Patients ≥65 years
Mean (range; SD)
15.8 (0–80; 11.2) 12.5 (0–35; 7.9) 20.2 (1.25–80.0; 13.3) t = −3.4, df = 89, p = 0.002
  1. aPearson χ2 test for categorical variables, t-test for means
  2. b For mean years in practice, N = 89. For all other variables data from all 91 chiropractors was used for analysis
  3. cIn both COAST and O-COAST studies, participating chiropractors were representative of respective, national chiropractors in terms of age, gender, location of practice and time since graduation