Pneumococcal and influenza immunization in asplenic persons: a retrospective population-based cohort study 1990-2002

Table 1 Characteristics of 879 asplenic patients

Characteristic	Total		Pre-existing hematologic diagnosis for which splenectomy could be considered										No pre-existing hematologic diagnosis
			ITP		Hodgkins disease		Non-Hodgkins lymphoma		Hemolytic anemia		Hypersplenism
	n = 879		n = 196		n = 9		n = 89		n = 55		n = 78		n = 452
	(100%)		(22.3%)		(1.0%)		(10.1%)		(6.3%)		(8.9%)		(51.4%)
	n	%	n	%	n	%	n	%	n	%	n	%	n	%
Age at splenectomy
≤ 18 years	65	7.4	12	6.1	†		†		19	34.6	11	14.1	21	4.7
> 18 years	814	92.6	184	93.9					36	65.4	67	85.9	431	95.3
Gender
Male	471	53.6	79	40.3	†		54	60.7	27	49.1	41	52.6	265	58.6
Female	408	46.4	117	56.7			35	39.3	28	50.9	37	47.4	187	41.4
Death
Yes	230	26.2	39	19.9	†		28	31.5	13	23.6	12	15.4	135	29.9
No	649	73.8	157	80.1			61	68.5	42	76.4	66	84.6	317	70.1
Any vaccination for influenza
Yes	467	53.1	123	62.8	†		49	55.1	39	70.9	41	52.6	210	46.5
No	412	46.9	73	37.2			40	44.9	16	29.1	37	47.4	242	53.5
Any vaccination for S.pneumoniae
Yes	145	16.5	42	21.4	†		12	13.5	16	29.1	21	26.9	53	11.7
No	734	83.5	154	78.6			77	86.5	39	70.9	57	73.1	399	88.3

ISSN: 1471-2334