Table 1.

Coefficients for physical exercise

Time spent	Light physical exercise	Moderate physical exercise	Heavy physical exercise
1 = not at all	0	0	0
2 = less than 1/2 hour per week	+1.5	+2.5	+3.25
3 = one hour per week	+4.5	+7.5	+9.75
4 = 2-3 hours per week	+15.0	+25	+32.5
5 = 4 hours or more per week	+30.0	+50.0	+65.0