na > 135
na <= 135
male
female
<3
>=3
Every mile
Every other mile
Every third mile or less often
No
Yes
3.0 to 4.9
2.0 to 2.9
1.0 to 1.9
0.0 to 0.9
-1.0 to -0.1
-2.0 to -1.1
-5.0 to -2.1