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      Psychometric Testing of the German Versions of Three Implementation Outcome Measures

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          Abstract

          Internationally comparable assessments of implementation outcomes are a prerequisite for the accurate and useful exchange of implementation science results. We translated the English versions of the acceptability of intervention measure (AIM), the intervention appropriateness measure (IAM), and the feasibility of intervention measure (FIM) into German following recent guidelines. We tested the structural validity, the internal consistency (Cronbach’s α), and the construct validity (known-groups validity) in a hypothetical situation study of secondary school teachers ( n1 = 142) and the structural validity and the internal consistency in a pilot field study of primary school teachers participating in a school health promotion project ( n2 = 61). The hypothesized three-factor solution (acceptability, appropriateness, and feasibility) revealed the best model fit in the hypothetical situation study (CFI = 0.97; RMSEA = 0.08). The second study tended to support these results (CFI = 0.99; RMSEA = 0.05) only when the error terms of two items from different constructs were allowed to correlate with each other (“seems like a good match” [IAM] and “seems possible” [FIM]). Furthermore, the intercorrelations between the three factors were higher in the pilot field study than in the hypothetical vignette study (0.71–0.86 vs. 0.06–0.35). The instruments’ internal consistency proved to be high in both studies (Cronbach’s α: 0.91–0.97). We gathered positive evidence for the known-groups validity, as participants who received different stimuli before answering the instruments rated them statistically significantly different. Our study showed that the German versions of the instruments could successfully be applied in health promotion research. We suggest using the four items per instrument rather than an abbreviated version and discuss recommendations for the instruments’ application.

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          G*Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences

          G*Power (Erdfelder, Faul, & Buchner, 1996) was designed as a general stand-alone power analysis program for statistical tests commonly used in social and behavioral research. G*Power 3 is a major extension of, and improvement over, the previous versions. It runs on widely used computer platforms (i.e., Windows XP, Windows Vista, and Mac OS X 10.4) and covers many different statistical tests of the t, F, and chi2 test families. In addition, it includes power analyses for z tests and some exact tests. G*Power 3 provides improved effect size calculators and graphic options, supports both distribution-based and design-based input modes, and offers all types of power analyses in which users might be interested. Like its predecessors, G*Power 3 is free.
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            Outcomes for Implementation Research: Conceptual Distinctions, Measurement Challenges, and Research Agenda

            An unresolved issue in the field of implementation research is how to conceptualize and evaluate successful implementation. This paper advances the concept of “implementation outcomes” distinct from service system and clinical treatment outcomes. This paper proposes a heuristic, working “taxonomy” of eight conceptually distinct implementation outcomes—acceptability, adoption, appropriateness, feasibility, fidelity, implementation cost, penetration, and sustainability—along with their nominal definitions. We propose a two-pronged agenda for research on implementation outcomes. Conceptualizing and measuring implementation outcomes will advance understanding of implementation processes, enhance efficiency in implementation research, and pave the way for studies of the comparative effectiveness of implementation strategies.
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              An index of factorial simplicity

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                Author and article information

                Journal
                Global Implementation Research and Applications
                Glob Implement Res Appl
                Springer Science and Business Media LLC
                2662-9275
                September 2021
                August 23 2021
                September 2021
                : 1
                : 3
                : 183-194
                Article
                10.1007/s43477-021-00019-y
                145fe794-5590-4b69-8268-e9711946af4f
                © 2021

                https://creativecommons.org/licenses/by/4.0

                https://creativecommons.org/licenses/by/4.0

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