* perito 1=infection, sex 1=female, race 1=non-white
*  perito        age        sex       race
        1         67          1          1
        1         62          1          1
        1         59          0          1
        1         65          0          0
        1         54          1          0
        1         45          0          0
        0         56          1          0
        1         49          1          0
        1         42          0          0
        1         51          1          0
        1         52          0          0
        1         70          1          0
        0         42          0          0
        0         53          0          0
        1         32          1          0
        0         50          1          1
        1         57          1          1
        0         28          1          1
        0         65          0          0
        0         61          0          0
        1         60          0          1
        0         38          0          0
        1         43          0          1
        1         54          0          0
        1         49          1          0
        1         71          1          0
        1         25          1          1
        0         59          0          0
        1         61          0          0
        1         45          1          0
        1         29          0          0
        1         31          1          0
        0         61          0          0
        0         57          1          0
        1         62          0          0
        1         48          1          0
        0         59          0          0
        1         58          0          0
        1         49          1          1
        0         68          0          0
        0         68          0          0
        1         64          0          0
        0         49          1          0
        0         26          0          0
        1         63          0          0
        1         46          0          1