Table 2. Incidence Rate of PTLD by Time... | American Society of Hematology

Table 2.

Incidence Rate of PTLD by Time Since Transplantation

Time Since Transplantation	No. of Patients	Person-Years at Risk	No. of PTLD	Incidence Rate^*
0-<1 mo	18,014	1,339	0	0.0
1-<2 mo	16,634	1,330	12	90.2
2-<3 mo	14,732	1,138	24	210.9
3-<4 mo	13,120	1,103	10	90.7
4-<5 mo	12,148	998	9	90.2
5-<6 mo	11,417	943	2	21.2
6-<12 mo	10,826	4,845	7	14.4
1-<2.5 yr	8,919	10,716	8	7.5
2.5-<10 yr	5,771	18,456	6	3.3
10+ yr	625	1,481	0	0.0
Total years	18,014	42,349	78	18.4

Time Since Transplantation	No. of Patients	Person-Years at Risk	No. of PTLD	Incidence Rate^*
0-<1 mo	18,014	1,339	0	0.0
1-<2 mo	16,634	1,330	12	90.2
2-<3 mo	14,732	1,138	24	210.9
3-<4 mo	13,120	1,103	10	90.7
4-<5 mo	12,148	998	9	90.2
5-<6 mo	11,417	943	2	21.2
6-<12 mo	10,826	4,845	7	14.4
1-<2.5 yr	8,919	10,716	8	7.5
2.5-<10 yr	5,771	18,456	6	3.3
10+ yr	625	1,481	0	0.0
Total years	18,014	42,349	78	18.4

Incidence rate is the observed number of PTLD cases divided by person-years at risk (×10⁴).