Yes	27	11.5	0.99	7	3	0.70
No	207	88.5	0.99	229	97	0.70
Scarifications
Yes	79	33.8	0.35	74	31.4	054
No	155	66.2	0.35	162	68.6	054
Injecting drugs
Yes	0	0	1.00	0	0	1.00
No	234	100	1.00	236	100	1.00
Health care worker
Yes	9	3.8	0.94	18	7.6	0.33
No	225	96.2	0.94	218	92.4	0.33
Condom use
Yes	5	2.1	0.48	15	6.4	0.74
No	229	97.9	0.48	221	93.6	0.74
Surgical procedures
Yes	60	25.6	0.79	50	21.2	0.23
No	174	74.4	0.79	186	78.8	0.23