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. 2009 Jan 16;14(1):35–39. doi: 10.1111/j.1542-474X.2008.00271.x

Table 3.

Association between QTc ≤ 380 ms and Androgen using in Bodybuilders

Drug‐Free Bodybuilders Bodybuilders Drug Using Total
QTc ≤ 380 ms
Present 10 66  76
Absent 76 13  89
Total 86 79 165

Statistics: Pearson chi‐square test [P = 0.0002]. Sensitivity = 83%. Specificity = 88%.