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Table 5 SF-36v2™ results in ME/CFS patients according to conformity to the Canadian diagnostic criteria

From: The functional status and well being of people with myalgic encephalomyelitis/chronic fatigue syndrome and their carers

SF-36 scales and summaries Patients with Canadian diagnostic criteria Patients without Canadian diagnostic criteria   
  Males
(n = 20)
Females
(n = 76)
Total
(n = 96)
Males
(n = 15)
Females
(n = 55)
Total
(n = 70)
Comparison of total mean scores
  mean SDa mean SDa mean SDa mean SDa mean SDa mean SDa Mean difference1 P-value2
Physical Component Summary 26.2 7.0 23.5 7.1 24.1 7.2 34.5 8.1 25.8 8.1 30.6 8.7 6.5 0.000
• Physical Functioning 26.9 11.6 24.1 8.2 24.7 9.0 36.2 13.3 30.4 10.7 31.8 11.5 7.1 0.000
• Role-Physical 21.1 5.1 22.9 5.2 22.5 5.2 30.2 10.7 29.1 9.9 29.3 10.0 6.8 0.000
• Bodily Pain 29.4 8.6 30.0 8.3 29.9 8.4 38.1 10.7 33.2 10.2 34.3 10.3 4.4 0.002
• General Health 23.9 6.5 26.6 6.6 26.0 6.6 32.7 8.7 30.6 8.5 31.0 8.5 5.0 0.000
Mental Component Summary 25.6 11.2 34.3 11.4 32.5 11.9 35.7 10.4 35.1 11.0 36.0 10.4 3.5 0.023
• Vitality 24.3 6.1 27.3 6.3 26.6 6.3 28.8 7.2 31.5 7.4 30.9 7.4 4.3 0.000
• Social Functioning 20.5 7.1 23.7 8.0 23.3 7.9 32.8 12.3 28.4 10.8 29.4 11.2 6.1 0.000
• Role-Emotional 24.1 17.3 31.7 14.6 29.6 15.3 33.1 15.0 33.0 14.5 33.1 14.5 3.5 0.076
• Mental Health 28.5 12.4 36.2 12.0 34.6 12.4 40.6 12.8 38.9 11.3 39.3 11.6 4.7 0.007
  1. aSD = Standard Deviation
  2. 1 Patients without Canadian criteria - Patients with Canadian criteria
  3. 2 t-test comparing totals of SF-36v2TM in patients, who conform or not with Canadian diagnostic criteria