Table 1: Patient demographics.

Sample size

Hospital location, (%)
 Beijing52 (42.3)
 Wuhan30 (24.4)
 Chongqing41 (33.3)

Gender, (%)
 Female79 (64.2)
 Male44 (35.8)

Age, mean (SD)71.3 (11.4)
Age group, (%)
 50–5926 (21.1)
 60–6924 (19.5)
 70–7936 (29.3)
 80+37 (30.1)

Health insurance type, (%)
 UEBMI57 (46.3)
 URBMI38 (30.9)
 RNCMS16 (13.0)
 Not insured6 (4.9)
 Free medical care3 (2.5)
 Commercial insurance3 (2.4)

Marital status, (%)
 Living with spouse90 (73.2)
 Divorce1 (0.8)
 Widowed32 (26.0)

Current residence, (%)
 Urban111 (90.2)
 Rural12 (9.8)

Work status, (%)
 Retired88 (71.6)
 On-the-job9 (7.3)
 Others26 (21.1)

RNCMS = Rural New Cooperative Medical System; SD = standard deviation; UEBMI = Urban Employee Basic Medical Insurance; URBMI = Urban Resident Basic Medical Insurance.