Table A1.

Estimated number of enrolees and sickness episodes

Population in Bavi:	235,000
Percent of population insured:	17.4%
Population un-insured:	235,000*(1-0.174) = 194,110
Number expected to enrol in a health insurance scheme:	194,110*48.4% = 93,949
Number of sickness episodes per person per year*:	3
Number of sickness episodes among those enrolled in health insurance scheme:	93,949*3 = 281,848
Of which: episodes in inpatient care:	281,848*1.4%* = 3946
episodes in outpatient care:	281,848*28.1%* = 79,199
episodes of self-treatment:	281,848*65.9%* = 185,738
episodes of non-treatment:	281,848*4.6%* = 12,965

* Source: Vietnam National Health Survey 2002