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Objective: To determine the construct validity of the nursing outcome “Performance of the Role of Parents” in mothers of hospitalized preterm infants.Methods: An evaluation study of diagnostic technologies was conducted. The sample consisted of 63 mothers of hospitalized preterm infants, defined as ≤34 weeks of gestation. A descriptive and internal consistency analysis was performed from the classical theory (Cronbach’s alpha) and the construct validity of the nursing outcome “Performance of the role of parents” was evaluated using the Rasch methodology following the postulates of Messick, under the structuring of Wolfe and Smith.Results: Sixty-three mothers were evaluated; median age 22 years, 67% belonged to socioeconomic strata 1 and 2, the median gestational age was 33 weeks. The 6 indicators of the NOC result (2211) presented an alpha of Cronbach (0,901). Outfit values between 0,74 to 1,60 and explained 53,8% of the variance; the unexplained variance in the first contrast was 1,5 eigenvalues, these findings indicate that this instrument that measures the parent role performance construct, is unidimensional and the data obtained is adjusted to the Rasch model.Conclusion: The design, validity and reliability of this scale is an important contribution to the neonatal nursing practice, since it is the first easy-to-use instrument in the neonatal unit to evaluate the performance of the maternal role, before discharge.

Validación de un instrumento en una unidad neonatal mediante el análisis Rasch