Document Type
Article
Language
eng
Publication Date
5-2020
Publisher
Elsevier
Source Publication
Journal of Obstetric, Gynecologic & Neonatal Nursing
Source ISSN
1552-6909
Abstract
Objective
To examine the psychometric properties of the nine-item Antepartum Gastrointestinal Symptom Assessment (AP-GI-SA) instrument.
Design
Single-group prospective design.
Setting
Urban prenatal clinic serving a diverse population.
Participants
Convenience sample of 45 pregnant women.
Methods
Participants completed the AP-GI-SA before a scheduled prenatal care appointment. We used Bayesian structural equation modeling to evaluate the construct validity of the scale and assessed known-groups validity. We assessed reliability through maximal reliability coefficient estimate and measured internal consistency with Cronbach’s alpha coefficient.
Results
Participants completed the instrument in 2 minutes or less. Construct validity was supported by confirmatory factor analysis (posterior predictive p value = 0.49, gamma-hat = 0.970, and root mean square error of approximation = 0.065), which indicated that the single-factor model is a plausible data-generative model for GI symptoms. The maximal reliability coefficient of 0.75 and Cronbach’s alpha coefficient of 0.67 supported reliability. Average AP-GI-SA scores were the highest for women in the third trimester. Of all nine GI symptoms, heartburn in the third trimester received the highest score.
Conclusion
Our findings provide preliminary support for the validity and reliability of the AP-GI-SA. The instrument may be used as a measure in intervention studies where GI symptoms of pregnancy are an outcome. The AP-GI-SA could also be useful in clinical settings to quickly evaluate GI symptoms.
Recommended Citation
Hanson, Lisa; VandeVusse, Leona; Garnier-Villarreal, Mauricio; McCarthy, Donna O.; Jerofke-Owen, Teresa; Malloy, Emily; and Paquette, Heidi, "Validity and Reliability of the Antepartum Gastrointestinal Symptom Assessment Instrument" (2020). College of Nursing Faculty Research and Publications. 713.
https://epublications.marquette.edu/nursing_fac/713
Comments
Accepted version. Journal of Obstetric, Gynecologic & Neonatal Nursing, Vol. 49, No. 3 (May 2020): 305-314. DOI. © 2020 Elsevier. Used with permission.