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Sampling issues in research with nonorganic failure-to-thrive children

D Drotar1

  • 1Case Western Reserve University School of Medicine, Cleveland, Ohio.

Journal of Pediatric Psychology
|April 1, 1990
PubMed

Insights

Sampling issues in nonorganic failure-to-thrive (NOFT) studies can bias results. Addressing variance in NOFT samples improves research accuracy and generalizability.

Area of Science:

  • Pediatrics
  • Child Psychology
  • Research Methodology

Background:

  • Nonorganic failure-to-thrive (NOFT) presents significant methodological challenges in research.
  • Variability in NOFT sample characteristics can impact study outcomes and interpretations.

Purpose of the Study:

  • To identify methodological problems in sampling NOFT children.
  • To propose strategies for addressing these sampling challenges.
  • To enhance the accuracy and generalizability of NOFT research.

Main Methods:

  • Analysis of common sources of variance in NOFT samples.
  • Identification of consequences of intrasample variation.
  • Review of strategies for comprehensive sample description.

Main Results:

  • Key variance sources include NOFT definition criteria, population selection, attrition, treatment, and risk factors.
  • Unrecognized variation leads to sample bias, limited generalizability, and false homogeneity assumptions.
  • Detailed sample descriptions are crucial for accurate NOFT definition and generalizability.

Conclusions:

  • Addressing sampling characteristics is vital for robust NOFT research.
  • Future research should objectively assess NOFT subtypes and individual differences.
  • Understanding sampling impacts prognosis and psychological status in NOFT children.

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