Statistical approaches to uncertainty: p values and confidence intervals unpacked. Issue 5 (30th September 2005)

• Record Type: Journal Article
• Authors: DOLL, HELEN; CARNEY, STUART
• Is Part Of: Evidence-based medicine. Volume 10:Issue 5(2005)
• Page Start: 133
• Page End: 134
• Publication Date: 2005-09-30
• Subjects: statistics; Evidence-based medicine -- Periodicals; 616
• DOI: 10.1136/ebm.10.5.133
• Languages: English
• ISSNs: 1356-5524

Abstract

Abstract : In a previous Statistics Note, we defined terms such as experimental event risk (EER), control event risk (CER), absolute risk reduction (ARR), and number needed to treat (NNT). 1 Estimates such as ARR and NNT alone, however, do not describe the uncertainty around the results. P values and CIs provide additional information to help us determine whether the results are both clinically and statistically significant (table 1Table 1 ).