Characteristics | Â | Â | Exclusionary condition | Odds ratio (OR) | ||||
---|---|---|---|---|---|---|---|---|
 | All | Yes | No | Unadjusted ORs | Adjusted ORs | |||
 | n = 210 | n = 100 (48%) | n = 110 (52%) | (95% CI) †| (95% CI) | |||
Telephone Classification | Â | Â | Â | Â | Â | Â | Â | Â |
   CFS-like | 169 | 80.48 | 85 | 50.30 | 84 | 49.70 | 1.75 (0.87-3.54) | 1.48 (0.61-3.56) |
   Unwell | 41 | 19.52 | 15 | 36.59 | 26 | 63.41 | 1.00 | 1.00 |
Age (years), mean (standard deviation, SD) | 45.06 | (9.65) | 45.99 | (8.98) | 44.22 | (10.19) | 1.21 (0.92-1.59) | 1.06 (0.74-1.54) |
Sex | Â | Â | Â | Â | Â | Â | Â | Â |
   Male | 38 | 18.10 | 18 | 47.37 | 20 | 52.63 | 0.99 (0.49-2.00) | 1.65 (0.69-3.92) |
   Female | 172 | 81.90 | 82 | 47.67 | 90 | 52.33 | 1.00 | 1.00 |
Race | Â | Â | Â | Â | Â | Â | Â | Â |
   Black | 35 | 16.67 | 14 | 40.00 | 21 | 60.00 | 0.67 (0.32-1.40) | 0.56 (0.20-1.52) |
   Other | 13 | 6.19 | 5 | 38.46 | 8 | 61.54 | 0.63 (0.20-1.99) | 0.62 (0.15-2.51) |
   White | 162 | 77.14 | 81 | 50.00 | 81 | 50.00 | 1.00 | 1.00 |
Residential areas | Â | Â | Â | Â | Â | Â | Â | Â |
   Rural | 106 | 50.48 | 54 | 50.94 | 52 | 49.06 | 2.28 (0.99-5.29) | 1.47 (0.51-4.20) |
   Urban | 72 | 34.29 | 36 | 50.00 | 36 | 50.00 | 2.20 (0.91-5.30) | 1.53 (0.55-4.27) |
   Metropolitan | 32 | 15.24 | 10 | 31.25 | 22 | 68.75 | 1.00 | 1.00 |
Body mass index (kg/m2), mean (SD) | 28.69 | (5.18) | 29.50 | (5.42) | 27.95 | (4.87) | 1.36 (1.03-1.79) | 1.47 (1.05-2.06) |
Multidimensional fatigue inventory | Â | Â | Â | Â | Â | Â | Per SD increment | Per SD increment |
   General fatigue | 17.05 | (2.36) | 17.34 | (2.09) | 16.79 | (2.57) | 1.27 (0.96-1.70) | 1.22 (0.81-1.84) |
   Physical fatigue | 14.52 | (3.31) | 14.88 | (3.22) | 14.19 | (3.38) | 1.24 (0.94-1.63) | 0.83 (0.52-1.34) |
   Reduced Activity | 11.96 | (4.10) | 12.33 | (4.19) | 11.63 | (4.02) | 1.19 (0.90-1.56) | 0.83 (0.54-1.26) |
   Reduced Motivation | 12.44 | (3.38) | 13.05 | (3.63) | 11.89 | (3.05) | 1.43 (1.07-1.89) | 1.44 (0.94-2.20) |
   Mental fatigue | 14.05 | (3.75) | 14.49 | (3.72) | 13.65 | (3.75) | 1.25 (0.95-1.65) | 1.19 (0.80-1.77) |
SF-36 | Â | Â | Â | Â | Â | Â | Per SD increment | Per SD increment |
   Physical functioning | 57.37 | (24.54) | 52.83 | (24.01) | 61.45 | (24.40) | 0.70 (0.53-0.92) | 0.77 (0.28-2.12) |
   Role physical | 9.05 | (19.45) | 5.50 | (13.09) | 12.27 | (23.40) | 0.67 (0.48-0.93) | 0.63 (0.40-1.00) |
   Bodily pain | 38.30 | (19.86) | 35.66 | (18.93) | 40.70 | (20.46) | 0.77 (0.58-1.02) | 0.60 (0.27-1.31) |
   Social functioning | 49.82 | (24.74) | 47.25 | (26.03) | 52.16 | (23.39) | 0.82 (0.62-1.08) | 1.24 (0.62-2.46) |
   Mental health | 54.27 | (22.15) | 52.04 | (21.59) | 56.29 | (22.55) | 0.82 (0.63-1.08) | 1.38 (0.55-3.46) |
   Role emotional | 27.46 | (37.36) | 23.66 | (35.23) | 30.90 | (39.03) | 0.82 (0.62-1.08) | 0.94 (0.55-1.61) |
   Vitality | 22.29 | (16.21) | 21.55 | (16.96) | 22.95 | (15.54) | 0.92 (0.70-1.20) | 1.20 (0.72-1.99) |
   General health | 40.17 | (19.46) | 38.10 | (20.87) | 42.05 | (17.97) | 0.81 (0.62-1.07) | 0.99 (0.51-1.92) |
   PCS* | 36.67 | (9.92) | 35.31 | (9.91) | 37.91 | (9.81) | 0.77 (0.58-1.01) | 1.47 (0.17-12.75) |
   MCS* | 36.75 | (12.58) | 35.75 | (12.78) | 37.67 | (12.39) | 0.86 (0.65-1.13) | 0.69 (0.12-3.99) |
   HUI2* | 61.94 | (10.80) | 59.95 | (10.96) | 63.76 | (10.37) | 0.69 (0.52-0.92) | Not included |
SI | Â | Â | Â | Â | Â | Â | Per SD increment | Per SD increment |
   SI_CFS | 49.03 | (16.60) | 50.20 | (15.94) | 47.97 | (17.17) | 1.15 (0.87-1.50) | 0.68 (0.42-1.11) |
   SI_NCFS | 36.98 | (18.68) | 39.95 | (19.63) | 34.24 | (17.40) | 1.37 (1.03-1.82) | 1.47 (0.93-2.32) |