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Neurobehavioral test performance in the third National Health and Nutrition Examination Survey
E F Krieg1, D W Chrislip, R E Letz
1National Institute for Occupational Safety and Health, Robert A. Taft Laboratories, 4676 Columbia Parkway, MS C-22, Cincinnati, OH 45226, USA. erk3@cdc.gov
Neurotoxicology and Teratology
|January 17, 2002
Summary
Neurobehavioral test performance in adults aged 20-59 varied by age, education, income, and race. Factors like sleep, energy, and even room temperature influenced cognitive test results.
Area of Science:
- Neuroscience
- Psychology
- Public Health
Background:
- The National Health and Nutrition Examination Survey (NHANES III) collected comprehensive health data from a representative US adult population.
- Neurobehavioral assessments are crucial for understanding cognitive function and its determinants in diverse populations.
Purpose of the Study:
- To analyze neurobehavioral test performance using data from the National Health and Nutrition Examination Survey III (NHANES III).
- To identify demographic, socioeconomic, and environmental factors influencing cognitive performance in US adults aged 20-59.
Main Methods:
- Utilized data from NHANES III, including three computerized neurobehavioral tests: simple reaction time, symbol-digit substitution, and serial digit learning.
- Analyzed relationships between test performance and variables such as age, sex, education, income, race-ethnicity, sleep, energy levels, and environmental factors like room temperature.
Main Results:
- Cognitive performance declined with increased age but improved with higher education and family income.
- Demographic performance differences narrowed with increasing family income.
- Factors like sleep, energy, computer familiarity, alcohol consumption, and effort significantly impacted test results.
- Language of test administration (English/Spanish) and increased room temperature were associated with altered performance.
Conclusions:
- Neurobehavioral test performance is influenced by a complex interplay of demographic, socioeconomic, behavioral, and environmental factors in US adults.
- Findings highlight the importance of considering these variables for accurate interpretation of cognitive assessments in public health research.
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