Table 1.

Patient demographics

	All pneumonia patients identified in claims (N=1,345)		Medical record status
			All medical records (N=388)		Documented pneumonia diagnosis (N=311)		No documented pneumonia diagnosis (N=77)
Female (n, %)	711	52.9%	209	53.9%	160	51.4%	49	63.6%
Age (n, %)
40 to 49 years	108	8.0%	29	7.5%	22	7.1%	7	9.1%
50 to 59 years	285	21.2%	66	17.0%	57	18.3%	9	11.7%
60 to 64 years	195	14.5%	62	16.0%	51	16.4%	11	14.3%
65+ years	757	56.3%	231	59.5%	181	58.2%	50	64.9%
Mean ± SD	67.4	12.5	67.8	11.6	67.5	11.4	68.9	12.3
Geographic region (n, %)
Northeast	236	17.5%	47	12.1%	41	13.2%	6	7.8%
Midwest	634	47.1%	201	51.8%	157	50.5%	44	57.1%
South	303	22.5%	87	22.4%	70	22.5%	17	22.1%
West	172	12.8%	53	13.7%	43	13.8%	10	13.0%
Healthplan type (n, %)
HMO	434	32.3%	122	31.4%	99	31.8%	23	29.9%
PPO	815	60.6%	234	60.3%	185	59.5%	49	63.6%
CDHP	48	3.6%	11	2.8%	10	3.2%	1	1.3%
Other commercial	48	3.6%	21	5.4%	17	5.5%	4	5.2%
Race (n, %)	n/a*
Caucasian/White			172	44.3%	147	47.3%	25	32.5%
African American/Black			9	2.3%	8	2.6%	1	1.3%
Asian/Pacific Islander			5	1.3%	4	1.3%	1	1.3%
Not specified			202	52.1%	152	48.9%	50	64.9%
Smoking status (n, %)	n/a*
Active smoker			90	23.2%	81	26.0%	9	11.7%
Former smoker			141	36.3%	122	39.2%	19	24.7%
Never smoked			40	10.3%	34	10.9%	6	7.8%
Unknown			117	30.2%	74	23.8%	43	55.8%

Notes: Age, geographic region, and healthplan type were captured via claims data at the index date, while race and smoking status were identified from the medical records.

^*Not applicable, data are only available in medical records, not the claims data.

Abbreviations: HMO, health maintenance organization; PPO, preferred provider organization; CDHP, consumer-driven health plan; SD, standard deviation.