Table 2a.
Demographic data of ME/CFS patients with an end-tidal CO2 < 30 mmHg or ≥ 30 mmHg at the end of the tilt test.
| PETCO2 < 30 mmHg at end-tilt (n = 31) |
PETCO2 ≥ 30 mmHg at end-tilt (n = 29) |
p-value | |
|---|---|---|---|
| Demographic characteristics: | |||
| Age (years) | 41 (14) | 37 (11) | 0.30 |
| Male/Female | 1/30 | 8/21 | 0.0083 * |
| Mild/moderate/severe disease | 7/12/12 | 9/16/4 | 0.09 * |
| Height (cm) | 172 (7) | 171 (10) | 0.71 |
| Weight (kg) | 70 (14) | 74 (20) | 0.34 |
| BMI (kg/m2) | 23.8 (4.6) | 25.4 (6.8) | 0.27 |
| BSA (duBois; m2) | 1.82 (0.17) | 1.86 (0.24) | 0.51 |
| Disease duration (years) | 7 (3–12) | 8 (4–14) | 0.62 † |
BMI: body mass index; BSA: body surface area; formula of Dubois; mild/moderate/severe disease: according to the ICC criteria; normHRBP: normal heart rate and blood pressure response; POTS: postural orthostatic tachycardia syndrome; * Chi-square; † Mann-Whitney U test.