Table 1.

Comparison of general information of the three groups of patients

Variable	Group A	Group B	Group C	P value
Age	53.4 ± 12.6	55.8 ± 10.9	53.1 ± 14.8	0.547
Male/female	18/15	17/16	19/14	0.885
Number of bridging vessels
one	5	4	3	0.932
two	8	7	9
three or more	20	22	21
NYHA
I	0	0	0	0.563
II	23	25	21
III	10	8	12
IV	0	0	0
LVEF	56.9 ± 11.5	58.2 ± 9.3	55.8 ± 12.7	0.612
Incision length	13.1 ± 2.8	14.8 ± 2.1	14.5 ± 2.8	0.886
Marriage
married	30	31	30	0.906
spinsterhood	1	1	2
widowed	2	1	1
Education
Middle school and below	16	18	15	0.719
High school and technical secondary school	14	10	15
College and above	3	5	3