Table 1 Demographic data, pulmonary function tests and missing data analysis
Parameter | Value | Missing Data (n,%) | Data Handling Method |
|---|---|---|---|
Age (Mean ± SD) | 68.4 ± 8.1 | 0 (0%) | Complete |
Age (Min - Max) | 48.0–86.0 | 0 (0%) | Complete |
Gender (Male/Female) | 60 / 28 | 0 (0%) | Complete |
Smoking Status (Never/Active/Former) | 32 / 23 / 33 | 3 (3.5%) | Multiple Imputation |
Comorbidity (Yes/No) | 61 / 27 | 0 (0%) | Complete |
GAP Index (Mean ± SD) | 4.0 ± 1.8 | 0 (0%) | Complete |
GAP Index (Min - Max) | 0.0–8.0 | 0 (0%) | Complete |
GAP Stage | Stage 1: 37 (42.5%) | 0 (0%) | Complete |
Stage 2: 33 (37.9%) | |||
Stage 3: 16 (18.4%) | |||
Dyspnea (Yes/No) | 76 / 10 | 0 (0%) | Complete |
Cough (Yes/No) | 78 / 8 | 0 (0%) | Complete |
Chest Pain (Yes/No) | 20 / 66 | 0 (0%) | Complete |
Family History (Yes/No) | 7 / 79 | 0 (0%) | Complete |
6-Minute Walk Test (Mean ± SD) | 339.4 ± 117.1 | 6 (7.0%) | Multiple Imputation |
6-Minute Walk Test (Min - Max) | 30.0–553.0 | 6 (7.0%) | Multiple Imputation |
BMI (Mean ± SD) | 28.0 ± 2.1 | 0 (0%) | Complete |
BMI (Min - Max) | 24.8–31.2 | 0 (0%) | Complete |
FEV1 (L) (Mean ± SD) | 1.97 ± 0.62 | 2 (2.3%) | Multiple Imputation |
FEV1 (L) (Median (IQR)) | 2.05 (1.53–2.35) | 2 (2.3%) | Multiple Imputation |
FVC (L) (Mean ± SD) | 2.39 ± 0.77 | 2 (2.3%) | Multiple Imputation |
FVC (L) (Median (IQR)) | 2.45 (1.90–2.82) | 2 (2.3%) | Multiple Imputation |
FEV1/FVC (%) (Mean ± SD) | 86.34 ± 9.73 | 2 (2.3%) | Multiple Imputation |
FEV1 (%) (Mean ± SD) | 77.56 ± 23.01 | 2 (2.3%) | Multiple Imputation |
FVC (%) (Mean ± SD) | 72.59 ± 21.39 | 2 (2.3%) | Multiple Imputation |
DLCO (%) (Mean ± SD) | 53.31 ± 17.43 | 4 (4.7%) | Multiple Imputation |
DLCO (%) (Median (IQR)) | 53.25 (41.40–62.10) | 4 (4.7%) | Multiple Imputation |
Patients with FVC < 80% | 69.8% (60/86) | 2 (2.3%) | Multiple Imputation |
Patients with DLCO < 80% | 95.3% (82/86) | 4 (4.7%) | Multiple Imputation |
FVC (%) (Mean, Median, Range) | 72.59%, 74.15%, 25.70 − 163.50% | 2 (2.3%) | Multiple Imputation |
DLCO (%) (Mean, Median, Range) | 53.31%, 53.25%, 12.40 − 110.60% | 4 (4.7%) | Multiple Imputation |
GAP Score (Mean, Median, Range) | 3.99, 4.00, 0–8 | 0 (0%) | Complete |
FVC/DLCO Ratio (Mean ± SD) | 1.48 ± 0.51 | 4 (4.7%) | Multiple Imputation |
FVC/DLCO Ratio (Median (IQR)) | 1.34 (1.11–1.74) | 4 (4.7%) | Multiple Imputation |
FVC/DLCO Ratio (Min - Max) | 0.56–3.42 | 4 (4.7%) | Multiple Imputation |