Interpreting a low P valueBMJ 2009; 338 doi: http://dx.doi.org/10.1136/bmj.b1381 (Published 08 April 2009) Cite this as: BMJ 2009;338:b1381
- John Fletcher, clinical epidemiologist
- 1BMJ, London WC1H 9JR
When a health authority introduced a new community based vaccine promotion team, vaccination rates for the MMR (measles, mumps, rubella) vaccine improved over the next two years. The improvement was statistically significant, with a one sided P value of less than 0.01. Which …
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