TABLE 2

Summary of BAT Statistics

ParameterBAT presentNo BAT presentP
Overall9.3% (95% CI, 6.5%–13.2%)90.7% (95% CI, 86.8%–93.5%)
Male10.9%89.1%0.310
Female6.8%93.2%
Mean age (y)45.4 (95% CI, 38.9–51.9)60.8 (95% CI, 58.7–62.9)<0.001