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Coding system for BOP, sites with PD≥ 5mm, tooth loss, smoking, CAL/Age ratio and siabetic status for modified PRA model
| Axis Score | Bop | No. of Sites with PD≥ 5mm | Tooth Loss | Smoking (Cigarettes/Day) | CAL/age ratio | Diabetic Status |
|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | Non smoker | 0 | <102 |
| 1 | ≤4 | 1-2 | 1-2 | Former smoker | ≤0.25 | 102-109 |
| 2 | 5-9 | 3-4 | 3-4 | <10 | 0.26- 0.5 | 110-117 |
| 3 | 10-16 | 5-6 | 5-6 | 10-19 | 0.51-0.75 | 118-125 |
| 4 | 17-25 | 7-8 | 7-8 | 20 | 0.76- 1.0 | 126-133 |
| 5 | >25 | >9 | >9 | >20 | >1 | ≥134 |
