Table 3.

Comparison of estimate distributions of our data set with MCDSS (2006) data seta

Categorical PMD: 10%–25%Categorical PMD: 25%–50%Categorical PMD: 50%–75%Categorical PMD: >75%
t test0.12590.03520.00850.0009
χ2 test0.08460.01200.00080.0012
  • NOTE: A two-sample t test and a two-sample χ2 test for binned data were used to statistically test for differences between the probability distributions of the effect estimates based on our more recent data versus the MCDSS data set.

  • aP values for H0 = no difference between distributions.