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Table 1 Video-analysis of chiropractor interaction equivalence between active and sham Activator Methods Chiropractic Technique (AMCT) treatment groups

From: Chiropractor interaction and treatment equivalence in a pilot randomized controlled trial: an observational analysis of clinical encounter video-recordings

    Active AMCT Sham AMCT
(n =54) (n =57)
Domain Variable Definition Median (SD) IQR Median (SD) IQR
Affective Social/Humor Statements or questions about everyday life or attempts at humor 9.0 (14.9) 14 8.0 (11.2) 13
  Name Use Number of times the name of the participant was spoken 2.0 (1.3) 2 2.0 (1.5) 1
Therapeutic Clinical Information Questions or comments to obtain clinical or health information 8.0 (5.3) 7 4.0 (3.1) 4
  Explanations Information on protocol or actions to take to improve health 3.5 (9.2) 8 1.0 (3.6) 3
  Logistics Statements on study procedures or treatment schedule 1.0 (1.4) 2 2.0 (2.5) 1
Procedural Directions Instructions given related to treatment protocol 63.0 (11.6) 15 58.0 (6.7) 8
  Cautions Statements on uncomfortable or startling touch or treatments 3.0 (1.5) 2 3.0 (1.2) 1
  Activator Clicks Sounds produced by Activator Adjusting Instrument 41.5 (30.1) 44 23.0 (10.1) 13
Treatment Effectiveness Optimistic Positive statement on health improvement or treatment success 2.5 (4.0) 6 0 (1.6) 0
  Pessimistic Negative statement on health improvement or treatment success 0 (1.1) 1 0 (0.7) 0
  Neutral Neutral statement about health or noncommittal sounds 7.5 (4.1) 6 5.0 (3.6) 4
Encounter Context Encounter Duration Duration of treatment in minutes 13.5 (4.1) 5 10.0 (1.8) 2
  Unclear Statement Statement unclear or spoken at soft volume 2.0 (2.6) 3 1.0 (2.0) 3