Determining the influence of the primary and specialist network of care on patient and system outcomes among patients with a new diagnosis of chronic obstructive pulmonary disease (COPD)

Table 3 Health care utilization during the 5 years of follow up: family physician and specialist as the usual provider of care

Number of COPD patients		FP	Spec	Standardized Difference
Number of COPD patients		N = 425,070	N = 25,767
Number of hospital admissions (any cause)	0	237,207 (55.8%)	9,107 (35.3%)	0.47
	1 to 5	174,968 (41.2%)	14,979 (58.1%)
	6 to 10	10,959 (2.6%)	1,294 (5.0%)
	> 10	1,936 (0.5%)	387 (1.5%)
Mean number of hospital admissions per patient		1.03 ± 1.83	1.77 ± 2.61	0.33
Number hospital admissions (COPD related)	0	378,120 (89.0%)	19,744 (76.6%)	0.34
	1 to 5	45,677 (10.7%)	5,724 (22.2%)
	6 to 10	1,116 (0.3%)	247 (1.0%)
	> 10	157 (0.0%)	52 (0.2%)
Mean number of hospital admission per patient (COPD related)		0.19 ± 0.74	0.47 ± 1.31	0.26
Discharge due to death		30,457 (7.2%)	6,790 (26.4%)	0.53
30 day readmission		35,600 (8.4%)	4,229 (16.4%)	0.25
Number of ER visits (any cause)	0	99,176 (23.3%)	6,044 (23.5%)	0.04
	1 to 5	234,998 (55.3%)	14,044 (54.5%)
	6 to 10	57,157 (13.4%)	3,480 (13.5%)
	> 10	33,739 (7.9%)	2,199 (8.5%)
Number of ER visits (COPD related)	0	383,582 (90.2%)	21,625 (83.9%)	0.27
	1 to 5	39,688 (9.3%)	3,839 (14.9%)
	6 to 10	1,404 (0.3%)	208 (0.8%)
	> 10	396 (0.1%)	95 (0.4%)
Number of ER visits with hospital admission	0	278,936 (65.6%)	11,272 (43.7%)	0.47
	1 to 5	136,917 (32.2%)	13,216 (51.3%)
	6 to 10	7,748 (1.8%)	992 (3.8%)
	> 10	1,469 (0.3%)	287 (1.1%)

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