Research Article
Primary and Secondary Spontaneous Pneumothorax: Prevalence, Clinical Features, and In-Hospital Mortality
Table 1
Modified ECOG performance status for this study.
| Grade | Content |
| 0 | Fully active without restriction | 1 | Restricted in physically strenuous activities, but ambulatory and able to carry out work of a light or sedentary nature | 2 | Ambulatory and capable of all self-care, but unable to carry out any work activities; up and about for more than 50% of waking hours | 3 | Capable of only limited self-care; confined to bed or a chair for more than 50% of waking hours | 4 | Completely disabled; cannot perform any self-care; completely confined to bed or a chair |
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ECOG, Eastern Cooperative Oncology Group.
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