Table 1.
Respiratory function and MMSE and MoCA-J of older patients with COPD (n=28).
| Mean and standard deviation of each assessment | |
|---|---|
| Assessment items | Mean ± SD |
| FVC (L) | 3.13±0.61 |
| FEV1 (L) | 1.68±0.56 |
| FEV1/FVC (%) | 53.5±12.9 |
| ％FEV1 (%) | |
| PaO2 (Torr) (n= 21) | 80.1±11.7 |
| PaCO2 (Torr) (n21) | 39.7±4.5 |
| A-aDO2 (Torr) (n=21) | 20.2 ±13.1 |
| MMSE (points) | 27.0±2.1 |
| MoCA-J (points) | 22.9±2.2 |
| Number of subjects identified by the assessments | |
| Assessment items | n of subjects |
| GOLD stage | |
| Stage I | 7 |
| Stage | 15 |
| Stage | 4 |
| Stage | 2 |
| PaO2 < 60 Torr | 2 |
| PaCO2 > 45Torr | 1 |
| MMSE (below the cutoff)* | 15 |
| MoCA-J (below the cutoff)° | 27 |
*MMSE cutoff for mild cognitive impairment was ≤ 27 points; °MoCA-J cutoff for mild cognitive impairment was ≤25 points; FVC, forced vital capacity; FEV1, forced expiratory volume in 1 second; PaO2, partial pressure of arterial oxygen; PaCO2, partial pressure of arterial carbon dioxide; AaDO2, alveolar-to-arterial difference for oxygen; MMSE, Mini-mental State Examination; MoCA-J, Japanese version of Montreal Cognitive Assessment.