Conclusions Symptoms, the SAC and the m-BESS have poor test-retest reliability. Symptoms have reasonable sensitivity and specificity for concussion but are subjective. The 3-word SAC and m-BESS are ...

Test-retest, the standard method used to investigate reliability of contingent valuation, is limited because when the time period between the two surveys is relatively short the study may exhibit ...

This study evaluated the equivalence of Chinese and US-English versions of the SF-36 Health Survey in a convenience sample of 309 Chinese nationals bilingual in Chinese and English living in a US city ...