Table 4.

Follow up details by outcome (most recent NYHA).

Variable	Most recent NYHA
	Class I		Class II		P value
	Freq.	Perc.	Freq.	Perc.
Access to Anticoagulation (n = 163 restricted to those eligible for anticoagulation)
No	2	100.0	0	0.0	0.835
Yes	147	91.3	14	8.7
Most recent INR value (Restricted to mechanical/valve repair n = 157)
Abnormally low	24	100.0	0	0.0	0.469
Mildly low	61	91.0	6	9.0
Therapeutic	42	89.4	5	10.6
Mild high	10	90.9	1	9.1
High	7	87.5	1	12.5
On penicillin oral and injection prophylaxis*
No	7	77.8	2	22.2	0.233
Yes	150	90.4	16	9.6
Years of post-surgery follow up
Less than 5 Years	108	92.3	9	7.7	0.168
5–8 Years	49	89.1	6	10.9
9–12 Years	15	78.9	4	21.1
Facility†
District Hospital	79	91.9	7	8.1	0.615
Referral Hospital	88	88.0	12	12.0
Provincial Hospital	3	100.0	0	0.0

* 16 patients missing data, ^† 2 patients missing data.