Skip to main content

Table 5 Characteristics of subjects with exclusionary conditions by types of exclusions (n = 280)

From: An evaluation of exclusionary medical/psychiatric conditions in the definition of chronic fatigue syndrome

  Type of exclusion  
  Med (n= 133) Psych (n= 114) Both (n= 33) p-value
  n % n % n %  
Sex        0.0143
   Female 109 81.95 75 65.79 25 75.76  
   Male 24 18.05 39 34.21 8 24.25  
Race        0.6690
   Black 48 46.09 33 28.95 10 30.30  
   White 78 58.65 77 67.54 21 63.64  
   Other 7 5.26 4 3.51 2 6.06  
Residential areas        0.3099
   Rural 60 45.11 65 57.02 19 57.58  
   Urban 57 42.86 35 30.70 11 33.33  
   Metropolitan 16 12.03 14 12.28 3 9.09  
  Mean SD Mean SD Mean SD  
Duration of fatigue (months) * 105.45 96.73 59.92 59.58 120.17 92.96 0.0003
BMI 29.27 5.68 27.94 5.38 29.55 5.10 0.115
MFI        
General
fatigue †‡
13.10 4.55 14.69 4.18 16.15 2.99 <0.001
Physical
fatigue *‡
11.68 4.49 11.74 4.09 14.58 3.68 0.002
Reduced
activity ‡
9.54 4.19 10.11 4.41 12.55 3.88 0.002
Reduced
motivation ‡
9.95 3.86 10.71 4.33 12.88 3.57 0.001
Mental
fatigue
10.83 4.39 13.05 4.32 13.85 4.24 <0.001
SF-36        
Physical
functioning*
67.86 27.04 71.36 24.82 53.33 25.15 0.002
   Role physical ‡ 31.20 40.17 27.41 36.28 9.85 23.33 0.013
   Bodily pain 54.08 26.85 53.23 26.29 42.18 28.05 0.067
Social
functioning ‡
68.80 26.72 58.44 30.87 49.24 26.51 <0.001
Mental
health
71.43 18.78 56.18 24.07 46.55 19.84 <0.001
Role
emotional
48.87 43.53 31.58 39.13 14.13 23.61 <0.001
   Vitality* 48.83 26.81 38.03 26.50 23.03 17.59 <0.001
General
health*‡
57.67 24.09 56.48 22.33 41.18 24.19 0.001
   PCS* § 42.22 11.64 45.43 11.32 38.31 11.16 0.0040
   MCS†‡§ 46.55 11.24 37.36 14.72 33.47 10.02 <0.0001
   HUI2*‡§ 74.50 14.32 69.34 14.72 60.50 11.25 <0.0001
Symptom scores        
CFS symptom
summary score ‡
23.98 20.70 30.13 21.14 37.98 21.90 0.0014
Non-CFS
symptom
summary score
18.71 17.93 27.86 30.38 35.67 21.40 <0.0001
  1. * Indicates the p-value for an post-hoc comparison between both and medical types with Tukey p-adjustment less than 0.01 for multiple group comparison.
  2. † Indicates the P-value for a post hoc comparison between medcial and psychiatric types with Tukey P-adjustment less than 0.01 for multiple group comparison.
  3. ‡ Indicates the P-value for a post hoc comparison between both and psychiatric types with Tukey P-adjustment less than 0.01 for multiple group comparison.
  4. § Nichol's health utility index 2 (HUI2) [14] was included in the multivariate model because it is a linear combination of 8 SF-36 subscales and strongly correlated with Physical Component Summary (PCS) and Mental Component Summary (MCS).