Method:A total of 98 military retirees aged above 80 years old from 17 army sanatoriums were investigated by adopting Pittsburgh sleep quality index (PSQI) scale.

• 选取17所驻京部队干休所的98名80岁以上老干部为调查对象,采用匹兹堡睡眠质量指数(PSQI)量表进行问卷调查。