Table 1: Cases versus controls
cases
controls
p-value
n
167
69
HRVA (%)
33 (19.8)
12 (17.9)
0.14
HRVB (%)
3 (1.8)
5 (7.2)
0.049
HRVC (%)
81 (48.5)
6 (8.7)
<0.001