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Articles

The Core Food Security Module Scale Measure Is Valid and Reliable When Used with Asians and Pacific Islanders^{1 ,2}

Joda P. Derrickson³, Anne G. Fisher^* and Jennifer E. L. Anderson

Nutrition Consultant, Kaneohe, HI 96744 and Departments of ^* Occupational Therapy and Food Science and Human Nutrition, Colorado State University, Fort Collins, CO 80523

³To whom correspondence should be addressed.

The Core Food Security Measure (CFSM) is used nationally to assess the extent and severity of household food insecurity in the previous 12 mo due to inadequate money for food. Both a scale measure and a categorical measure were developed from a national cross-sectional sample. The objective of this research was to determine whether the CFSM scale measure is a reliable and valid food security measure for use in Hawaii, where at least 50% of the population is of Asian or Pacific Islander descent. We completed an independent assessment of the robustness of the internal scale construct validity of the CSFM scale measure and hierarchical order of items using the same Rasch methods used previously to develop the CSFM. From a sample of 1664 respondents, data from 362 were used in the Rasch analysis. Item goodness-of-fit statistics indicated that responses to the "adults cut the size or skip meals" item and its follow-up item were redundant [outfit mean-square residual (MnSq) = 0.6, z = -2]. Responses to the "(un)able to eat balanced meals" item were erratic (outfit MnSq = 2.1, z = 2). Findings pertaining to goodness-of-fit of the respondents indicated an acceptable rate of misfit (4.7%). Rate of misfit did not vary with family status or with any ethnic group except the Samoans. Overall, the CFSM scale measure fit as well with the Hawaii data as it did with national data, although identified limitations may affect food security monitoring and research.

KEY WORDS: • food security • hunger • Hawaii • validity • humans

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