Primary care physician volume and quality of care for older adults with dementia: a retrospective cohort study

BMC Family Practice

Table 3 Adjusted Relative Rates of Vaccination and Prescriptions for People with Dementia, by PCP’s daily patient volume

Outcome	Influenza Vaccination		Cholinesterase Inhibitor Prescription		Benzodiazepine Prescription		Antipsychotic Prescription
Outcome	Adjusted^a RR (95% CI)	p-value	Adjusted^a RR (95% CI)	p-value	Adjusted^a RR (95% CI)	p-value	Adjusted^a RR (95% CI)	p-value
Physician’s Daily Patient Volume
< 20 patients/day	1.0 (reference)	-	1.0 (reference)	-	1.0 (reference)	-	1.0 (reference)	-
20 -24 patients/day	1.00 (0.98 to 1.03)	0.81	1.10 (1.05 to 1.14)	< .0001	1.17 (1.10 to 1.24)	< .0001	1.12 (1.05 to 1.19)	0.001
25–29 patients/day	0.98 (0.95 to 1.02)	0.32	1.09 (1.04 to 1.14)	0.0002	1.17 (1.09 to 1.26)	< .0001	1.15 (1.06 to 1.23)	0.0003
≥ 30 patients/day	0.97 (0.94 to 0.996)	0.02	1.08 (1.04 to 1.13)	0.0001	1.32 (1.23 to 1.41)	< .0001	1.25 (1.17 to 1.33)	< .0001

^aAll models were adjusted for the following confounders: patient age, sex, years since dementia diagnosis, CIHI Population Grouper category, urban/rural location of residence, neighborhood deprivation quintile, past 10-year immigration, and PCP age, sex, years since graduation, Canadian medical graduate, urban/rural location of practice. Models of influenza vaccination were also adjusted for past-year hospitalization for COPD

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