Invasive Pneumococcal Disease: Still Lots to Learn and a Need for Standardized Data Collection Instruments

Table 3

Comorbid illnesses in 2435 patients with invasive pneumococcal disease.

	Number	Percent
Any underlying disease	2409	98.9
Selected underlying diseases
Epilepsy	136	5.6
Alzheimer’s disease	83	3.4
Stroke	106	4.4
Hypertension	622	25.5
Heart failure	156	6.4
Previous myocardial infarction	168	6.9
Atrial fibrillation	128	5.3
Anemia	167	6.9
Insulin dependent diabetes mellitus	87	3.6
Hepatitis C	307	12.6
Cirrhosis	151	6.2
HIV/AIDS	117	4.8
Asplenia	37	1.5
Rheumatoid arthritis	56	2.3
Asthma	266	10.9
Chronic obstructive pulmonary disease	441	18.6
Cancer within thepast 5 years	307	12.6
Lung cancer	53	2.1
Multiple myeloma	42	1.7
Chronic lymphocytic leukemia	19	0.7
Lymphoma	17	0.7
Acute leukemia	5	0.2
Solid organ transplant	14	0.6
No underlying disease	26	1.1
One underlying disease	2121	87.1
Two underlying diseases	256	10.5
Three underlying diseases	32	1.3