From: Study on the equity of medical services utilization for elderly enrolled in different basic social medical insurance systems in an underdeveloped city of Southwest China
Income grade
UEBMI
URBMI
NCMS
I
≤2500
≤1200
≤350
II
2501–3520
1201–2000
351–800
III
3521–4500
2001–2800
801–1370
IV
4501–5600
2801–4000
1371–2500
V
>5600
>4000
>2500