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Table 2 The changes in primary outcomes (NDI) in experimental and control groups vs time

From: Does improvement towards a normal cervical sagittal configuration aid in the management of cervical myofascial pain syndrome: a 1- year randomized controlled trial

Outcome

Experimental group

Control group

Mean difference (95% CI)

P value

effect size (Cohen’s d)

Effect size r

NDI

 Baseline

35.7 ± 2.6

35.1 ± 3.2

[−.5 1.7]

.2

  

 After 10 weeks

23.3 ± 2.8

24 ± 1.8

[−1.59 .13]

.09

  

 1-year follow up

17.4 ± 1.3

28.5 ± 1.2

[−11.9-10.2]

< 0.001

8.8

.9

G

< 0.001

 

T

< 0.001

G*T

< 0.001

  1. NDI Neck disability index, G group T: time G vs T: group versus time