Table 1.
Comparison of Clinical Characteristics in Patients with Chronic Obstructive Pulmonary Disease Who Were Able and Unable to Stand Unaided from the Sitting Position
| Able to Stand | Unable to Stand | P Value | |
|---|---|---|---|
| Age, yr | 69 (10) | 75 (9) | 0.0002 |
| Sex, M:F | 251:137 | 26:23 | 0.12 |
| Smoking, pack-years | 41 (25) | 47 (38) | 0.16 |
| BMI, kg/m2 | 27.3 (5.8) | 25.4 (6.4) | 0.03 |
| FEV1, % predicted | 47 (19) | 42 (19) | 0.10 |
| MRC | 3.2 (1.1) | 3.9 (1.0) | <0.0001 |
| ISW, m | 255 (151) | 88 (84) | <0.0001 |
| COTE | 1.3 (2.0) | 1.9 (2.2) | 0.05 |
| CAT | 20.2 (7.9) | 23.3 (9.5) | 0.01 |
| QMVC, kg | 26.7 (10.2) | 17.9 (7.0) | <0.0001 |
Definition of abbreviations: BMI = body mass index; CAT = Chronic Obstructive Pulmonary Disease Assessment Test; COTE = chronic obstructive pulmonary disease–specific comorbidity test; ISW = incremental shuttle walk; MRC = Medical Research Council dyspnea score; QMVC = quadriceps maximum voluntary contraction.
Data are mean (SD) except where otherwise indicated.