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
Review
. 2003 Jan 25;326(7382):219.
doi: 10.1136/bmj.326.7382.219.

Interaction revisited: the difference between two estimates

Douglas G Altman  1 , J Martin Bland
Affiliations
Review

Interaction revisited: the difference between two estimates

Douglas G Altman et al. BMJ. .
No abstract available

PubMed Disclaimer

Comment in

References

    1. Altman DG, Matthews JNS. Interaction 1: Heterogeneity of effects. BMJ. 1996;313:486. - PMC - PubMed
    1. Matthews JNS, Altman DG. Interaction 2: Compare effect sizes not P values. BMJ. 1996;313:808. - PMC - PubMed
    1. Matthews JNS, Altman DG. Interaction 3: How to examine heterogeneity. BMJ. 1996;313:862. - PMC - PubMed
    1. Torgerson DJ, Bell-Syer SEM. Hormone replacement therapy and prevention of nonvertebral fractures. A meta-analysis of randomized trials. JAMA. 2001;285:2891–2897. - PubMed
    1. Bland JM, Altman DG. Logarithms. BMJ. 1996;312:700. - PMC - PubMed