TY - JOUR
T1 - Development and validation of a Weight-Specific Health Literacy Instrument (WSHLI)
AU - Tsai, Tzu I.
AU - Lee, Shoou Yih D.
N1 - Publisher Copyright:
© 2017 Asia Oceania Association for the Study of Obesity
PY - 2018/3/1
Y1 - 2018/3/1
N2 - Objective: Develop/validate a weight-specific health literacy instrument. Methods: The development of weight-specific health literacy measurement consisted of seven phases: (a) a literature review; (b) consultation with weight management experts; (c) generation of an item pool; (d) selection of items via the Delphi method; (e) pilot testing; (f) a national survey; and (g) examination of the psychometric properties of the results. Results: A random sample of 362 Taiwanese adults completed the face-toface survey. The results of factor analysis indicated reasonable good fit of a 2-factor model (χ 2 /df = 1.1, p = 0.18; RMSEA = 0.02, CFI = 0.99, TLI = 0.99). Construct validity testing showed that the both factors were significantly correlated with s-MHLS (γ = 0.71, p < 0.001; γ = 0.22, p < 0.001), comprehension (γ = 0.32, p < 0.001: γ = 0.10, p < 0.05), and writing (γ = 0.44, p < 0.001: γ = 0.11, p < 0.05). Predictive validity testing showed that the first factor had significant correlations with weight management efficacy (γ = 0.16, p < 0.001), and three weight management behaviors. The second factor was significantly correlated with weight management efficacy (γ = 0.11, p < 0.05) but not with the 3 weight management behaviors. Conclusions: On the basis of the psychometric results, we conclude that the final version of Weight-Specific Health Literacy Instrument (WSHLI) includes the 13 items. It is a valid and reliable tool for weight management research and evaluation in Mandarin Chinese speaking populations.
AB - Objective: Develop/validate a weight-specific health literacy instrument. Methods: The development of weight-specific health literacy measurement consisted of seven phases: (a) a literature review; (b) consultation with weight management experts; (c) generation of an item pool; (d) selection of items via the Delphi method; (e) pilot testing; (f) a national survey; and (g) examination of the psychometric properties of the results. Results: A random sample of 362 Taiwanese adults completed the face-toface survey. The results of factor analysis indicated reasonable good fit of a 2-factor model (χ 2 /df = 1.1, p = 0.18; RMSEA = 0.02, CFI = 0.99, TLI = 0.99). Construct validity testing showed that the both factors were significantly correlated with s-MHLS (γ = 0.71, p < 0.001; γ = 0.22, p < 0.001), comprehension (γ = 0.32, p < 0.001: γ = 0.10, p < 0.05), and writing (γ = 0.44, p < 0.001: γ = 0.11, p < 0.05). Predictive validity testing showed that the first factor had significant correlations with weight management efficacy (γ = 0.16, p < 0.001), and three weight management behaviors. The second factor was significantly correlated with weight management efficacy (γ = 0.11, p < 0.05) but not with the 3 weight management behaviors. Conclusions: On the basis of the psychometric results, we conclude that the final version of Weight-Specific Health Literacy Instrument (WSHLI) includes the 13 items. It is a valid and reliable tool for weight management research and evaluation in Mandarin Chinese speaking populations.
KW - Health literacy
KW - Scale development
KW - Weight management
KW - Weight-Specific Health Literacy Instrument (WSHLI)
UR - http://www.scopus.com/inward/record.url?scp=85038393779&partnerID=8YFLogxK
U2 - 10.1016/j.orcp.2017.11.003
DO - 10.1016/j.orcp.2017.11.003
M3 - Article
C2 - 29269247
AN - SCOPUS:85038393779
SN - 1871-403X
VL - 12
SP - 214
EP - 221
JO - Obesity Research and Clinical Practice
JF - Obesity Research and Clinical Practice
IS - 2
ER -
