Table V.

Comparison of the positive-predictive value of PDW for bone marrow disease at various PDW values.

PDW threshold (%)	Number of patients	Number of patients with bone marrow disease	% of all patients within this group	Positive-predictive value given PDW (%)	Odds ratio	95% CI
≥19.0	21	18	5.4	85.7	2.904	0.839–10.049
≥18.5	43	35	11.0	81.4	2.178	0.979–4.846
≥18.0	87	71	22.2	81.6	2.433	1.347–4.393
≥17.5	143	120	36.5	83.9	3.561	2.132–5.946
≥17.0	214	173	54.6	80.8	3.687	2.350–5.782
≥16.5	273	216	69.6	79.1	4.883	3.066–7.775
≥16.0	319	238	81.4	74.6	4.212	2.479–7.155

PDW, platelet distribution width; CI, confidence interval.