Table 1.

Variables obtained in the selected studies.

Characteristics of the Studies	Results Related to PIPs
Author (year; country)	Prevalence of PIPs according to STOPP/START criteria
Residents (% of women)	Number of STOPP criteria calculated
Number of NH	Number of PIPs detected according to STOPP criteria
Data collection method	Prevalence of PIPs according to STOPP criteria
Study design	Average PIPs detected according to STOPP
Inclusion criteria	Number of START criteria calculated
Patient age	Number of PIPs detected according START criteria
Number of drugs prescribed	Average PIPs detected according to START
Most prevalent diagnoses	Prevalence of PIPs according to START criteria
	Risk factors associated with PIPs

Abbreviations: PIPs: Potentially Inappropriate Prescriptions; NH: Nursing Homes.