Table 1 Sample characteristics overall and by detection of any lean test abnormalitya
From: Physiological assessment of orthostatic intolerance in chronic fatigue syndrome
Any abnormality (n = 38) | No abnormality (n = 25) | Total (n = 63) | |
|---|---|---|---|
Age (years) (Mean ± SD) | 47.1 (± 11.3) | 49.7 (± 9.1) | 48.1 (± 10.5) |
Sex (% female) | 84% | 80% | 83% |
Race (% White) | 84% | 72% | 79% |
College graduate (%) | 84% | 84% | 84% |
Currently insured | 92% | 92% | 92% |
Not currently married* (%) | 55% | 80% | 65% |
Not employed (%) | 66% | 56% | 62% |
Current Psych Dx (%) | 26.5% | 23.8% | 25.4% |
Onset status* | |||
Sudden (%) | 57% | 26% | 45% |
Gradual (%) | 43% | 74% | 55% |
CDC-SI (Mean ± SD) | |||
Duration of Illness (Fatigue), years | 12.8 (9.1) | 16.3 (11.4) | 14.2 (10.1) |
# of CFS Symptoms | 6.4 (2.0) | 6.3 (1.5) | 6.3 (1.8) |
CFS Symptom Summary Score | 67.4 (24.8) | 65.9 (20.1) | 66.8 (22.9) |
MFI-20 (Mean ± SD) | |||
General Fatigue | 18.6 (2.1) | 17.9 (2.2) | 18.3 (2.2) |
Physical Fatigue | 18.0 (2.5) | 16.6 (3.5) | 17.4 (3.0) |
Mental Fatigue | 15.6 (4.0) | 14.6 (3.6) | 15.2 (3.9) |
Reduced Activity | 17.0 (3.3) | 14.9 (4.3) | 16.2 (3.8) |
Reduced Motivation | 13.5 (4.4) | 11.6 (4.1) | 12.8 (4.4) |
SF-36 T-Scores (Mean ± SD) | |||
Physical Functioning | 31.4 (9.1) | 34.7 (8.7) | 32.7 (9.0) |
Role Physical | 23.1 (7.9) | 26.1 (10.5) | 24.3 (9.0) |
Bodily Pain | 35.5 (8.9) | 34.2 (9.00) | 35.0 (8.9) |
General Health | 29.0 (8.9) | 33.1 (11.4) | 30.6 (10.0) |
Vitality | 28.8 (7.7) | 30.5 (6.2) | 29.5 (7.1) |
Social Functioning | 22.7 (9.2) | 26.5 (7.6) | 24.2 (8.7) |
Role Emotional | 45.2 (13.6) | 46.4 (12.4) | 45.7 (13.1) |
Mental Health | 44.9 (10.3) | 46.4 (9.5) | 45.5 (10.0) |
GAD-7 Score (Mean ± SD) | 4.1 (4.4) | 5.6 (5.1) | 4.7 (4.7) |
Co-morbidity | |||
Irritable Bowel Syndrome (IBS) | 71% | 72% | 71% |
Fibromyalgia (FM) | 29% | 16% | 24% |
Migraine | 66% | 68% | 67% |