Table 2.
Characteristics of the patients with abnormal signals (“yes”) versus those without (“no”) during transport (N=23).
| Variables and categories | Yes (n=14) | No (n=9) | P valuea | |
| Age (years), mean (SD) | 62.07 (12.91) | 68 (6.75) | .17 | |
| Sex, n (%) | .40 | |||
| Male | 6 (43.86) | 6 (66.67) | ||
| Female | 8 (57.14) | 3 (33.33) | ||
| Weight, mean (SD) | 62.71 (11.76) | 61.11 (7.47) | .69 | |
| Body mass index, mean (SD) | 24.01 (2.71) | 23.33 (1.91) | .49 | |
| Oxygen use before study n (%) | 3 (21.43) | 0 (0) | .25 | |
| Study device application: rehabilitation n (%) | 3 (21.43) | 0 (0) | .25 | |
| Smoking n (%) | .22 | |||
| Nonsmoker | 8 (57.14) | 2 (22.22) | ||
| Ex-smoker | 3 (21.43) | 5 (55.56) | ||
| Current-smoker | 3 (21.43) | 2 (22.22) | ||
| Underlying disease n (%) | ||||
| Diabetes mellitus | 3 (21.41) | 2 (22.22) | >.99 | |
| Hypertension | 4 (28.57) | 5 (55.56) | .38 | |
| History of tuberculosis | 0 (0) | 3 (33.33) | .05 | |
| Pulmonary disease | 4 (28.57) | 3 (33.33) | >.99 | |
| Arrhythmia | 0 (0) | 0 (0) | >.99 | |
| Lung cancer | 10 (71.43) | 7 (77.78) | >.99 | |
| Other malignancy | 1 (7.14) | 1 (11.11) | >.99 | |
| Pulmonary function test, mean (SD) | ||||
| FVCb | 2.99 (0.97) | 3.22 (0.73) | .57 | |
| FEV1c | 2.13 (0.77) | 2.17 (0.48) | .88 | |
| FEV1/FVC | 0.72 (0.13) | 0.68 (0.04) | .35 | |
| DLCOd | 63.42 (20.32) | 74.33 (19.92) | .30 | |
| Vital sign before trial, mean (SD) | ||||
| Systolic blood pressure (mmHg) | 115.79 (11.81) | 119.11 (16.22) | .60 | |
| Diastolic blood pressure (mmHg) | 73.36 (4.97) | 72.44 (10.33) | .81 | |
| Heart rate | 73.07 (11.09) | 78.11 (11.56) | .31 | |
| Respiratory rate | 17.86 (1.46) | 18.89 (1.05) | .06 | |
| Temperature | 36.60 (0.27) | 36.64 (0.44) | .79 | |
aStudent t test for continuous variables and Fisher exact test for categorical variables.
bFVC: forced vital capacity; FEV1: forced expiratory volume in 1 sec; DLCO: diffusing capacity for carbon monoxide.
cFEV1: forced expiratory volume in 1 sec.
dDLCO: diffusing capacity for carbon monoxide.