Table 2.

Demographic, covariate, and outcome information by quintile of propensity for pneumonia.

Quintile	1		2		3		4		5
Pneumonia	No	Yes	No	Yes	No	Yes	No	Yes	No	Yes
n, unweighted	36,117	593	35,845	936	35,451	1,465	34,346	2,431	27,367	9,425
n, weighteda	175,936	2,894	175,375	4,586	173,554	7,181	168,364	11,934	133,925	46,098
Age (years)	53.08	52.59	69.06	69.90	77.43	78.48	78.55	79.69	76.80	72.54
Female	0.656	0.638	0.570	0.627	0.554	0.626	0.420	0.467	0.516	0.459
Admitted from SNFb	0.001	0.002	0.003	0.004	0.006	0.011	0.014	0.020	0.021	0.014
AIDSc	< 0.001	0.002	0.001	0.004	0.002	0.003	0.003	0.002	0.002	0.002
Arthritis	0.024	0.019	0.024	0.037	0.020	0.021	0.018	0.020	0.017	0.013
CHFd	0.002	0.009	0.009	0.016	0.029	0.039	0.228	0.279	0.405	0.331
Chronic Lung Disease	0.024	0.036	0.058	0.068	0.102	0.113	0.274	0.274	0.255	0.233
Diabetes Mellitus	0.370	0.311	0.314	0.354	0.168	0.193	0.190	0.211	0.181	0.188
Liver Disease	0.004	0.003	0.008	0.008	0.009	0.011	0.012	0.012	0.015	0.017
Metastatic Cancer	0.001	0.002	0.006	0.007	0.011	0.020	0.029	0.030	0.022	0.016
Pulmonary/Circulatory Disorders	0.012	0013	0.013	0.026	0.009	0.011	0.016	0.017	0.015	0.013
Renal Failure	0.033	0.059	0.046	0.069	0.057	0.070	0.112	0.113	0.137	0.127
Tumor	0.003	0.012	0.008	0.008	0.014	0.020	0.032	0.031	0.023	0.018
Peptic Ulcer	< 0.001	0	< 0.001	0	< 0.001	0.001	0.001	0	0.001	0.001
Paralysis	0.195	0.192	0.216	0.238	0.225	0.238	0.272	0.293	0.347	0.319
Mechanical Ventilaiton	0	0	0	0	0	0	< 0.001	0	0.246	0.520
Dysphagiae	< 0.001	0.002	0.003	0.006	0.012	0.008	0.116	0.116	0.541	0.645
Gastrostomy Tube	0	0	0	0	0	0	0.001	< 0.001	0.227	0.417
Nasogastric Tube	0	0	< 0.001	0	< 0.001	0	0.001	0.001	0.014	0.022
Enteral/Parenteral Nutrition	0	0	< 0.001	0.003	0.001	0.001	0.009	0.015	0.142	0.244
Died	0.005	0.086	0.012	0.118	0.022	0.142	0.029	0.152	0.131	0.237
Adjusted Relative Risk Death	1	12.511	1	7.1863	1	5.37102	1	4.41061	1	1.3208
Cost of Hospitalization	$12,722	$23,537	$9,926	$17,794	$9,097	$15,950	$9,330	$16,078	$17,745	$51,802
NNTf		13		10		9		9		10

^aQuintile 1 is the lowest risk for pneumonia, Quintile 5 has the highest risk for pneumonia.

^bAll analyses take into account the weighted sample.

^cSkilled Nursing Facility

^dAcquired Immune Deficiency Syndrome

^eCongestive Heart Failure

^fDysphagia- derived from ICD-9 code (438.82, 787.2) and other clinical codes associated with dysphagia

^gNumber of pneumonia cases that would need to be prevented to prevent one death. Calculated as the reciprocal of the absolute difference in death rounded up to the nearest whole integer.