OBJECTIVE: To assess psychometric properties of the revised 15-item Impact on Family (IOF) Scale. STUDY DESIGN: A secondary analysis of items using data collected from 252 parents during an earlier randomized clinical trial. RESULTS: Exploratory factor analysis and confirmatory factor analysis identified a single factor with factor loadings similar to that of IOF developers. The one factor accounts for 45.7% of the sample variance. An Item Response Theory analysis found that 11 of the 15 items had alpha values greater than 1.00, with good to excellent item characteristic and item information curves. The test information and measurement error curves for the entire IOF were excellent. Construct validity of the IOF also was supported. Parent IOF scores correlated in the expected directions with maternal mood (r = -0.50), sibling behavior problems (r = -0.35), and severity of illness (r = 0.31) and were associated with family socioeconomic status (t = -4.5, all P < .001). CONCLUSIONS: This study provides independent support for validity and reliability of the revised IOF scale. This scale is a promising, easy-to-use instrument for the measurement of impact of illness and disability on families of children with chronic illness or disability.
OBJECTIVE: To assess psychometric properties of the revised 15-item Impact on Family (IOF) Scale. STUDY DESIGN: A secondary analysis of items using data collected from 252 parents during an earlier randomized clinical trial. RESULTS: Exploratory factor analysis and confirmatory factor analysis identified a single factor with factor loadings similar to that of IOF developers. The one factor accounts for 45.7% of the sample variance. An Item Response Theory analysis found that 11 of the 15 items had alpha values greater than 1.00, with good to excellent item characteristic and item information curves. The test information and measurement error curves for the entire IOF were excellent. Construct validity of the IOF also was supported. Parent IOF scores correlated in the expected directions with maternal mood (r = -0.50), sibling behavior problems (r = -0.35), and severity of illness (r = 0.31) and were associated with family socioeconomic status (t = -4.5, all P < .001). CONCLUSIONS: This study provides independent support for validity and reliability of the revised IOF scale. This scale is a promising, easy-to-use instrument for the measurement of impact of illness and disability on families of children with chronic illness or disability.
Authors: Peter M Wehmeier; Alexander Schacht; Ralf W Dittmann; Karin Helsberg; Christian Schneider-Fresenius; Martin Lehmann; Monika Bullinger; Ulrike Ravens-Sieberer Journal: Qual Life Res Date: 2010-12-07 Impact factor: 4.147
Authors: H Gerry Taylor; Nori Minich; Mark Schluchter; Kimberly Andrews Espy; Nancy Klein Journal: J Int Neuropsychol Soc Date: 2019-04 Impact factor: 2.892
Authors: Ryan M Antiel; N Scott Adzick; Elizabeth A Thom; Pamela K Burrows; Diana L Farmer; John W Brock; Lori J Howell; Jody A Farrell; Amy J Houtrow Journal: Am J Obstet Gynecol Date: 2016-06-02 Impact factor: 8.661