• Eladio J Collado-Boira, Francisco H Machancoses, and Maria Dolores Temprado.
• Eladio J. Collado-Boira, PhD, Department of Nursing, Universitat Jaume I of Castellón, Spain. Francisco H. Machancoses, PhD, Designs and Methods Department, Fundación Andaluza Beturia para la Investigación... more en Salud (FABIS), Spain. Maria Dolores Temprado, PhD, Department of Nursing, University CEU Cardenal Herrera, Spain. less
• J Wound Ostomy Continence Nurs. 2018 Jul 1; 45 (4): 335-340.

PurposeThe purpose of this study was to describe development of the Specific Self-Care for Ostomized Patients Questionnaire (CAESPO) instrument and evaluate its construct validity, internal reliability, and test-retest reliability (temporal stability).DesignProspective evaluation of psychometric properties of the instrument.Subjects And SettingThe study sample comprised 125 persons (n = 89, 71.2% men) with a temporary (n = 42, 33.6%) and permanent (n = 83, 66.4%) colostomy (n = 102, 81.6%) and ileostomy (n = 23, 18.4%). Their mean age was 66.72 years; all had undergone ostomy surgery at least 3 months prior to study participation. Participants were drawn from 4 acute care facilities in the province of Castellon, Spain.InstrumentThe CAESPO Questionnaire is completed by a nurse or health care provider. It comprises 3 sections: the first queries sociodemographic data, the second queries pertinent clinical data, and the third contains 58 scored items with 4 ordinal responses. Possible cumulative scores ranged from 58 to 232 points; scores are reported based on a derived percentage score that varies from 0 to 100, where a score of 0 indicates lower self-care and 100 indicates a high level of self-care.MethodsData were collected at baseline and retesting was completed 6 months later. Internal consistency of the CAESPO was evaluated using the Cronbach α coefficient; temporal stability (test-retest reliability) was evaluated using the test-retest procedure; confirmatory factor analysis based on conceptually hypothesized factor structure was performed to evaluate construct validity.ResultsInitial assessment of the construct validity of the CAESPO using confirmatory factory analysis revealed a poor fit, resulting in removal of multiple items from each of the subscales owing to low-factor loading values. The final model comprised 58 scored items; it was found to have a good fit based on standard indices (χ= 43.132, P < .001; root mean square error of approximation = 0.155 [0.107-0.204]; Bentler-Bonett normed fit index = 0.957; comparative fit index = 0.967; incremental fit index = 0.968), indicating adequate construct validity. The internal consistency of the CAESPO total score was acceptable at α = 0.889. Test-retest reliability (temporal stability) was deemed excellent (α = 0.987).ConclusionsPsychometric tests indicate that the CAESPO is a valid and reliable instrument for measuring self-care in persons living with a fecal ostomy.

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