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Table 3 ANOVA results

From: Biofeedback in the prophylactic treatment of medication overuse headache: a pilot randomized controlled trial

Clinical index

Biofeedback group

Control group

Group effect

Time effect

Interaction group X time effect

 

T1

T2

T3

T1

T2

T3

   
 

M(CI95%)

M(CI95%)

M(CI95%)

M(CI95%)

M(CI95%)

M(CI95%)

   

Frequency

(days/month)

19.93

(17.49; 22.37)

13.93

(10.52; 17.34)

13.00

(9.63; 16.37)

22.08

(19.36; 24.81)

24.25

(20.43;28.06)

22.33

(18.56; 26.10)

**F[1,25] = 14.11;

*F[1,25] = 5.44;

**F[1,25] = 9.62;

p = 0.001

p = 0.014

p = 0.001

Analgesic intake

(number tot/month)

21.27

(13.68; 28.85)

11.93

(4.31; 19.53)

12.40

(2.83; 21.97)

26,62

(18.14; 35.11)

27.04

(18.54; 35.54)

21.17

(16.47; 37.86)

F[1,25] = 4.192;

*F[1,25] = 4.52;

*F[1,25] = 5.561

p = 0.051

p = 0.025

p = 0.012

  1. Abbreviations: M mean, CI 95 % confidence interval 95 %
  2. *p<0.05 **p<0.01