Table 1 Statistical power calculation of our study considering three different OR.

From: Evaluation of VDR gene polymorphisms in Trypanosoma cruzi infection and chronic Chagasic cardiomyopathy

Statistical power calculation

 

T. cruzi infection (436/547)*

Chronic Chagasic cardiomyopathy (171/376)**

OR = 1.50

98%

82%

OR = 1.25

60%

35%

OR = 1.10

16%

10%

  1. The estimation was performed considering a prevalence of 1.44% and a minor allele frequency of 25%.
  2. *Analysis performed by using 436 seronegative vs. 547 seropositive individuals.
  3. **Analysis performed by using 171 asymptomatic vs. 376 chronic Chagas cardiomyopathy individuals.
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