pat, I'm not sure where you're getting those numbers.
390 patients treated.
160 given test A; 230 test B.
if 1000 patients treated, the ratios should be the same.
304 given test A; 696 test B
190 of test A male, with 38 recovering
114 of test A female, with 76 recovering.
635 of test B male, with 151 recovering.
61 of test B female, with 46 recovering.
again, test B is better if you know the gender of your patient, but if you don't test A is better.