Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2002 Mar 9;324(7337):606-7.
doi: 10.1136/bmj.324.7337.606.

Statistics Notes: Validating scales and indexes

J Martin Bland  1 , Douglas G Altman
Affiliations

Statistics Notes: Validating scales and indexes

J Martin Bland et al. BMJ. .
No abstract available

PubMed Disclaimer

References

    1. Gagliardi A, Jadad AR. Examination of instruments used to rate quality of health information on the internet: chronicle of a voyage with an unclear destination. BMJ. 2002;324:569–573. - PMC - PubMed
    1. Jüni P, Altman DG, Egger M. Assessing the quality of controlled clinical trials. BMJ. 2001;323:42–46. - PMC - PubMed
    1. Muldoon MF, Barger SD, Flory JD, Manuck B. What are quality of life measurements measuring? BMJ. 1998;316:542–545. - PMC - PubMed
    1. Streiner DL, Norman GR. Health measurement scales: a practical guide to their development and use. 2nd ed. Oxford: Oxford University Press; 1996.
    1. Bland JM, Altman DG. Cronbach's alpha. BMJ. 1997;314:572. - PMC - PubMed