| Ref ID | 155 |
| First Author | K. G. Shojania |
| Journal | ANNALS OF INTERNAL MEDICINE |
| Year Of Publishing | 2007 |
| URL | https://pubmed.ncbi.nlm.nih.gov/17638714/ |
| Keywords |
• General medical • Currency |
| Problem(s) |
• Untimely (taking too long) or resource intensive • Not updated regularly |
| Article Type | Empirical |
| Article Subtype | Cross-sectional survey/Methodological systematic review |
| First Author Country | Canada |
| Aim | To estimate the average time to changes in evidence that are sufficiently important to warrant updating systematic reviews by performing a survival analysis of 100 systematic reviews |
| Level of Investigation | Descriptive |
| Summary of Findings | Survival analysis of 100 meta-analyses indexed in American College of Physicians Journal Club from 1995 to 2005 found that new evidence that substantively changed conclusions about the effectiveness or harms of therapies arose frequently and within relatively short time periods. The median survival time without substantive new evidence for the meta-analyses was 5.5 years. Significant new evidence was already available for 7% of the reviews at the time of publication and became available for 23% within 2 years. |
| Number of systematic reviews included | 100 |
| Number of eligible systematic reviews assessed | 651 |
| Treatment impacted | No |
| Treatment impacted description | |
| Interpretation impacted | Not Applicable |
| Interpretation impacted description |