Variable Group Study groupN= 50 Control groupN= 40 Chi-Square p-value Statistical significance
No (%) No (%)   52.8   0.00 p<0.01** (HS)
Palpitation 48 96 5 12.5
Normal ECG 2 4 35 78.5   64.2
ECG changes 48 96 5 12.5
** (HS) = highly significant
Table 3: Frequency of Palpitation and abnormal ECG in study group in comparison to control group