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Husbands' and wives' discordant self-reports on couple-level variables: implications for data analysis
Mariana Amorim1,2,3, Susana Silva1,3, Milton Severo1,3
1EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Portugal.
Porto Biomedical Journal
|January 2, 2020
Summary
Discrepancies in couple reporting on income and relationship length are common. Separate interviews for individual and couple data are recommended to address these reporting challenges in research.
Area of Science:
- Social Sciences
- Demography
- Family Studies
Background:
- Analyzing couples as a unit presents methodological challenges.
- Discordant answers on couple-level variables like income and relationship duration are frequent.
- This study addresses how to manage spousal discrepancies in research.
Purpose of the Study:
- To identify appropriate proxies for couple-level variables when partners provide conflicting information.
- To investigate the association between individual responses, summary measures, and socioeconomic status.
- To offer solutions for handling spousal discrepancies in statistical analyses.
Main Methods:
- Data collected from 82 couples with very preterm infants, surveyed separately 15-22 days post-birth.
- Socioeconomic position factor score computed using principal component analysis.
- Generalized linear models used to assess associations between individual answers, summary measures, and the factor score.
Main Results:
- Nearly 40% of couples disagreed on household monthly income.
- Approximately 19% of couples differed on the length of their marital relationship, with men reporting longer durations.
- No significant associations found between individual/summary measures and the socioeconomic position score.
Conclusions:
- Spousal discrepancies in reporting couple-level variables are substantial.
- Collecting individual data via separate interviews alongside joint couple interviews is suggested.
- This approach can mitigate methodological issues arising from discordant spousal reporting.
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