Table 7.
Sullivan score assignment table for the 5-variable simplified risk score.
| Variable | Category | β (logit)a | OR (95% CI) | W = β × (X_i − X_ref)b | Pointsc |
|---|---|---|---|---|---|
| Age (years) | ≥60 | 0 | 1.00 | 0.0000 | 0 |
| 50–59 | 0.4606 | 1.585 (0.944–2.660) | 0.4606 | 1 | |
| <50 | 1.1546 | 3.173 (1.966–5.120) | 1.1546 | 3 | |
| Sex | Female | 0 | 1.00 | 0.0000 | 0 |
| Male | 0.7109 | 2.036 (1.258–3.294) | 0.7109 | 2 | |
| Maximum polyp diameter (cm) | <1.0 | 0 | 1.00 | 0.0000 | 0 |
| 1.0–1.9 | 1.3018 | 3.676 (1.980–6.825) | 1.3018 | 3 | |
| ≥2.0 | 2.0123 | 7.480 (3.599–15.549) | 2.0123 | 5 | |
| Polyp count (n) | 1 | 0 | 1.00 | 0.0000 | 0 |
| 2–3 | 0.3978 | 1.489 (0.908–2.442) | 0.3978 | 1 | |
| ≥4 | 0.9935 | 2.701 (1.581–4.615) | 0.9935 | 2 | |
| BMI (kg/m2) | ≥24 | 0 | 1.00 | 0.0000 | 0 |
| <24 | 0.4444 | 1.560 (1.044–2.330) | 0.4444 | 1 | |
| Intercept (β₀) | — | −6.3577 | — | — | — |
a
β coefficients from the multivariable logistic regression on categorized predictors (reference categories set to β = 0).
b
For categorical predictors, X_i = 1 for the index category and X_ref = 0 for the reference category; hence W_i = β_i. All W≥0, guaranteeing a non-negative integer score.
c
Points = round(W_i/B), where B = 0.40 (e^0.40 ≈ 1.49; each 1-point increment ≈ OR 1.49 ≈ + 50% risk). Total score range = 0–13. Reference-group baseline risk = 0.17%. Risk formula: P(bleeding) = 1/(1 + e^(6.358 − 0.40 × Total Score)).