Validation of the Stanford Brief Activity Survey: examining psychological factors and physical activity levels in older adults

J Phys Act Health. 2010 Jan;7(1):87-94. doi: 10.1123/jpah.7.1.87.


Background: This study examined the construct validity and reliability of the new 2-item Stanford Brief Activity Survey (SBAS).

Methods: Secondary analysis was conducted using data collected from the healthy older controls (n = 1023) enrolled in the Atherosclerotic Disease Vascular Function and Genetic Epidemiology (ADVANCE) study. Construct validity was examined by regression analyses to evaluate significant trends (P < or = .05) across the SBAS activity categories for the selected psychological health factors measured at baseline and year 2, adjusted for gender, ethnicity and education level. Test-retest reliability was performed using Spearman's rank correlation.

Results: At baseline, subjects were 66 +/- 2.8 years old, 38% female, 77% married, 61% retired, 24% college graduate, and 68% Caucasian. At baseline, lower self-reported stress, anxiety, depression, and cynical distrust, and higher self-reported mental and physical well-being were significantly associated with higher levels of physical activity (p trend < or = 0.01). These associations held at year 2. The test-retest reliability of the SBAS was statistically significant (r(s)= 0.62, P < .001).

Conclusion: These results provide evidence of the construct validity and reliability of the SBAS in older adults. We also found a strong dose-response relationship between regular physical activity and psychological health in older adults, independent of gender, education level and ethnicity.

Publication types

  • Research Support, N.I.H., Extramural
  • Validation Study

MeSH terms

  • Aged
  • California / epidemiology
  • Cross-Sectional Studies
  • Female
  • Health Behavior
  • Health Knowledge, Attitudes, Practice*
  • Health Status
  • Health Surveys
  • Humans
  • Male
  • Mental Disorders / epidemiology*
  • Mental Health*
  • Middle Aged
  • Motor Activity*
  • Psychometrics
  • Statistics as Topic
  • Statistics, Nonparametric