Table 1.

PICOS inclusion and exclusion criteria

PICOS	Inclusion criteria	Exclusion criteria
Population	LTC home residents with oral disease	Non-LTC home residents
Intervention	POHC services delivered in LTC homes	Independent-living or assisted-living environments and non-program delivery
Comparator	Usual care as current practice	POHC services delivered in independent or supportive/assisted living environments
Outcomes	Primary outcomes: oral disease-specific assessment tools measuring plaque levels, gum inflammation, bone levels, and decayed teeth Secondary outcomes: pneumonia rates, AP ratios, oral health-related quality of life (OHRQoL) tools that target older adults	Studies without any defined or relevant clinical outcomes
Study design	RCTs, non-RCTs, single-arm trials, cohort studies, case–control studies, and case series studies	Non-English language, single case reports, expert reviews, editorials, and opinion pieces