Portuguese version of the Tilburg Frailty Indicator: Transcultural adaptation and psychometric validation

Abstract

Aim: To present the translation and validation process of the Portuguese version of the Tilburg Frailty Indicator (TFI). Methods:A cross-sectional study was designed using a non-probability sample of 252 community-dwelling older adults. Preliminary studies were carried out for face and content validity assessment. Internal consistency, test-retest reliability, construct (convergent/divergent) and criterion validity were subsequently analyzed. Results:The sample was mainly women (75.8%), with a mean age of 79.2 ± 7.3 years. TFI internal consistency was good (KR-20 = 0.78). Test-retest reliability for the total was also good (r = 0.91), with kappa coefficients showing substantial agreement for most items. TFI physical and social domains correlated as expected with concurrent measures, whereas the TFI psychological domain showed similar correlations with other psychological and physical measures. The TFI showed a good to excellent discrimination ability in regard to frailty criteria, and fair to good ability to predict adverse outcomes. Conclusions:The psychometric properties of the TFI seem to be consistently good. These findings provide initial evidence that the Portuguese version is a valid and reliable measure for assessing frailty in the elderly.

Changes in the Household Structures of the Elderly: Household Projections for Turkey, 2016-2050

“…The internal consistency for the total TFI score was at acceptable levels but the Cronbach's alpha reliability coefficient and adjusted item total correlations showed that the internal consistency reliability coefficients were low for some of the subitems of the TFI, particularly those of the social component. These results are similar to the results obtained for the original version of the TFI and other translated versions (5,13,20). CFA of the scale revealed that the RMSEA and SRMR values were <0.08 and that the CFI, GFI, and AGFI values were >0.90.…”

“…Therefore, while some elderly people may remain healthy, others are more frail and vulnerable to stress factors. Recently, the significance of the concept of frailty has substantially increased in studies on old age and the clinical care of the elderly (5).…”

“…The frail elderly are defined as individuals with increased vulnerability to external stressors due to age-related functional losses in the neuromuscular, metabolic, and immune systems; reduced mobility and strength; and nutritional disorders (10). Frail individuals are at a higher risk of clinically significant adverse events such as hospitalization, becoming care-dependent, falling, and mortality (3,5,(7)(8)(9)(11)(12)(13)(14).…”

“…Scales developed worldwide must be adapted, and their validity and reliability must be evaluated being used in our country. In this context and based on current findings, the Tilburg Frailty Indicator (TFI) facilitates the screening for frailty in communitydwelling elderly people (5). Asserting that a practical screening tool was required to identify community-dwelling frail elderly people, Gobbens et al developed the TFI in 2010 (9,13).…”

Portuguese version of the Swedish Occupational Fatigue Inventory (SOFI) among assembly workers: Cultural adaptation, reliability and validity

“…Two professional English translators carried out the back translation. The back translation results were reviewed, and a harmonization of all new versions and source version was performed in order to detect and deal with any discrepancies that could have arisen between different language versions, ensuring conceptual equivalence [31,32]. To assess the level of comprehensibility of the translation, a cognitive debriefing was made, involving a pretest with 22 participants.…”