A simple frailty questionnaire (FRAIL) predicts outcomes in middle aged African Americans
ObjectiveTo validate the FRAIL scale.DesignLongitudinal study.SettingCommunity.ParticipantsRepresentative sample of African Americans age 49 to 65 years at onset of study.MeasurementsThe 5 item FRAIL scale (Fatigue, Resistance, Ambulation, Illnesses, Loss of Weight) at baseline and activities of daily living (ADLs) instrumental activities of daily living (IADLs) mortality, short physical performance battery (SPPB) gait speed, one leg stand, grip strength and injurious falls at baseline and 9 years. Blood tests for CRP, SIL6R, STNFR1, STNFR2 and 25 (OH) vitamin D at baseline.ResultsCross sectionally the FRAIL scale correlated significantly with IADL difficulties, SPPB, grip strength and one leg stand among participants with no baseline ADL difficulties (N=703) and those outcomes plus gait speed in those with no baseline ADL dependencies (N=883) TNFR1 was increased in pre frail and frail subjects and CRP in some subgroups. Longitudinally (N=423 with no baseline ADL difficulties or N=528 with no baseline ADL dependencies) and adjusted for the baseline value for each outcome, being pre frail at baseline significantly predicted future ADL difficulties, worse one leg stand scores, and mortality in both groups, plus IADL difficulties in the dependence excluded group. Being frail at baseline significantly predicted future ADL difficulties, IADL difficulties, and mortality in both groups, plus worse SPPB in the dependence excluded group.ConclusionThis study has validated the FRAIL scale in a late middle aged African American population. This simple 5 question scale is an excellent screening test for clinicians to identify frail persons at risk of developing disability as well as decline in health functioning and mortality.
The journal of nutrition, health aging