From: Diagnosis of rheumatic carditis in Mongolian children
ARF
RHD
x²
d
p
Carditis
66
93%
85
100%
6.1
1
0.013
Polyarthritis
45
63.4%
36
42.4%
6.8
0.009
Chorea
10
14.1%
2
2.4%
7.4
0.006
Subcutaneous nodule
4
5.6%
0
4.9
0.027
Erythema marginatum
3
4.2%
1%
1.4
0.23