Table 1.

Selected communities and characteristics of respondents

District	Pudong	Changning	Hongkou	Putuo	Jinshan	Chongming
Male	339	83	109	129	76	107
Female	493	115	165	163	78	140
Age ≥ 60	715	165	211	244	139	200
Age 80~	117	32	63	48	18	47