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Table 1 Descriptive checklist of the reported ‘effect sizes’ in eight randomized sham-controlled studies included in a previous systematic review on pressure pain threshold changes after spinal manipulation

From: How big is the effect of spinal manipulation on the pressure pain threshold and for how long does it last? – secondary analysis of data from a systematic review

First author
Year
Quality score as reported in previous review (Honoré and al, 2018) - Area of spinal manipulation
- Regional testing site/s
Number of follow-ups and time of follow-ups -Is there a reported effect size? (Yes/No)
- Which type of “effect size” was reported (between or within-group comparison)?
Ruiz Saez 2007 8/9 - Cervical
- Upper trapezius
3 follow-ups:
1) Immediately after
2) 5 min after
3) 10 min after
-Yes
-Within-group comparison
Srbely2013 7.5/9 -Cervical (bilateral)
- Infraspinatus muscle
4 follow-ups:
1) 1 min after
2) 5 min after
3)10 min after
4) 15 min after
-No
- NA
Fernandez de la Penas 2008 7/9 - Cervical
- C5-C6 level
1 follow-up:
1) 5 min after
-Yes
- Within-group comparison
Fernandez de la Penas 2007 7/9 - Cervical
- Ipsilateral and contralateral epicondyle
1 follow up:
1) 5 min after
- Yes
- Within-group comparison
Hamilton 2007 7/9 - Cervical
- Between C0 and C2
2 follow-ups:
1) 5 min after
2) 30 min after
- Yes
- Within-group comparison
Yu 2012 8/9 - Lumbar
- L5-S1 over apophyseal joints
- L5 dermatome
1 follow-up:
1) Immediately after
- No
- NA
Thomson 2009 6/9 - Lumbar
-Spinous process of L3
1 follow-up:
1) Immediately after
- Yes
-Within-group comparison
Fryer 2004 5/9 -Thoracic
-Thoracic spinous process between T1 and T4
1 follow-up:
1) Immediately after
- Yes
- Within-group comparison
  1. NA: not applicable;