Table 1.

Characteristics of informants

Characteristics	Number	Percentage
Communities
Qudancha	13	8.0
Guru	12	7.4
Duina	13	8.0
Pari	17	10.4
Shangkangbu	18	11.0
Xiakangbu	17	10.4
Gangu	17	10.4
Rubingang	10	6.1
Galingang	9	5.5
Zhuju	8	4.9
Chema	10	6.1
Renqingang	19	11.7
Gender
Female	46	28.2
Male	117	71.8
Age
Below 29	15	9.2
30–39	26	16.0
40–49	22	13.5
50–59	42	25.8
60–69	39	23.9
Above 70	19	11.7