Table 1.
Patients’ characteristics
| Demographic variable | |
|---|---|
| Age, years | |
| Range | 80–90 |
| Mean | 82.2 ± 2.2 |
| Sex Male/Female | 35/30 |
| Performance status 0/1/2 | 53/9/3 |
| Smoking history | 39 |
| Smoking index | |
| Range | 40–2175 |
| Mean | 574 |
| Clinical stage IA/IB | 35/30 |
| Pathological stage | |
| IA/IB/IIA/IIB/IIIA | 33/20/3/3/6 |
| Histology AD/SQ/Others | 53/6/6 |
| Procedure (Lobectomy/Seg/WWR) | 43/3/19 |
| Pulmonary function | |
| FVC (L) | |
| Range | 1.69–4.35 |
| Mean | 2.62 ± 0.53 |
| % FVC | |
| Range | 64–137 |
| Mean | 99.1 ± 18.2 |
| FEV1 | |
| Range | 1.20–3.53 |
| Mean | 1.91 ± 0.49 |
| FEV1% | |
| Range | 53.5–92.0 |
| Mean | 73.3 ± 7.1 |
| Mini-mental state examination | |
| Normal/mild to moderate/Severe | 32/16/0 |
| Comorbidity total | 45 (69%) |
| Hypertension | 36 (55%) |
| Arrhythmia | 6 (9.2%) |
| Ischemic heart disease | 2 (3.1%) |
| COPD (FEV1/FVC <70%) | 14 (21%) |
| Prior tuberculosis | 5 (7.7%) |
| Post lobectomy | 2 (3.1%) |
| Diabetes mellitus | 7 (10.8%) |
| Renal failure | 1 (1.5%) |
| Arteriosclerosis obliterans | 1 (1.5%) |
| Hypertrophic cardiomyopathy | 1 (1.5%) |
| Ischemic cerebral disease | 1 (1.5%) |
AD: adenocarcinoma; SQ: squamous cell carcinoma; Seg: segmentectomy; WWR: wide wedge resection; FVC: forced vital capacity; FEV1: forced expiratory volume in one second; COPD: chronic obstructive pulmonary disease