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Table 2 Percentage (95% confidence interval) of chiropractic respondents ordering, undertaking, or recommending investigations

From: Management of people with acute low-back pain: a survey of Australian chiropractors

Investigation Vignette 1 Vignette 2 Vignette 3 Vignette 4 Vignette 5*
N = 274           
Lumbosacral plain x-ray 40 (34, 46) 52 (46, 58) 47 (41, 53) 40 (34, 46) 67 (62, 73)
Lumbosacral CT scan 0 (0, 2) 2 (1, 4) 18 (13, 22) 10 (7, 14) 4 (2, 7)
Lumbosacral MRI 1 (0, 3) 1 (0, 4) 9 (5, 12) 4 (2, 7) 2 (1, 5)
Full spine plain x-ray 24 (19, 29) 32 (27, 38) 14 (10, 18) 25 (20, 30) 28 (23, 33)
None 34 (28, 39) 14 (9, 18) 20 (15, 25) 28 (23, 34) 3 (1, 6)
Overall x-ray guideline adherence 37 (31, 43) 16 (12, 20) 39 (33, 45) 37 (31, 43) 95 (91, 97) †‡
  1. * The only vignette where guideline recommends plain x-ray and not advice to stay active
  2. Note: For Vignettes 1-4, x-ray guideline adherence is defined as the number of participants not ordering any type of x-ray (e.g., lumbosacral, full spine, AP lateral, pelvic)
  3. Note: For Vignette 5, x-ray guideline adherence is defined as the number of participants ordering some type of x-ray (e.g., lumbosacral, full spine, AP lateral, pelvic)
  4. † Exact binomial confidence calculated [14]
  5. ‡ Based on 273 participants.