Source of variation | Sum of squares | Degrees of freedom | Mean sum of squares | F test | P value | F critical value |
---|---|---|---|---|---|---|
Habitual exposure | 1004.19 | 3 | 334.73 | 12.14 | 0.001 | 3.86 |
Severity grouping | 331.19 | 3 | 110.40 | 4.00 | 0.046 | 3.86 |
Error | 248.06 | 9 | 27.56 | Â | Â | Â |
Total | 1583.44 | 15 | Â | Â | Â | Â |