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Showing results for "estimate".

1. Suppl-1-User-Guide-To-Ocer 130129 (pdf file)
   effectivehealthcare.ahrq.gov/sites/default/files/suppl-1-user-guide-to-ocer_130129.pdf
   January 01, 2011 - For example, to assume that an unbiased estimate of ATT is a valid estimate of ATU, a researcher would … In this case, the IV LATE estimate would not identify either ATE or ATU. 4. … Therefore, the ATE and ATU are unidentified by the ATT estimate. b. … Therefore, the LATE estimate would not identify ATT, ATU, or ATE. 6. … Accordingly, ATE and ATU will be unidentified by the biased ATT estimate. b.

2. Development of a Software Tool for Obtaining Doubly Robust Estimate of Treatment Effects | Effective Health Care Program
   effectivehealthcare.ahrq.gov/products/treatment-effects-estimates-tool
   December 02, 2009 - Development of a Software Tool for Obtaining Doubly Robust Estimate of Treatment Effects … Research Report Development of a Software Tool for Obtaining Doubly Robust Estimate

3. Change Score or Followup Score? An Empirical Evaluation of the Impact of Choice of Mean Difference Estimates | Effective Health Care (EHC) Program
   effectivehealthcare.ahrq.gov/products/choice-of-mean/white-paper
   April 20, 2015 - There are multiple ways to estimate the mean difference: using the change score from the baseline, using … Discrepancy in conclusion occurs when one estimate (e.g., change score) shows significant difference … and the other estimate (e.g., followup score) does not. … Using the Knapp-Hartung modification of random effect estimate led to most (10) meta-analyses showing … This study of 63 meta-analysis indicated that using the change score versus the followup score to estimate

4. Testing the Predictive Validity of Strength of Evidence Grades | Effective Health Care (EHC) Program
   effectivehealthcare.ahrq.gov/products/grades-predictive-values/abstract
   September 14, 2015 - predictive validity to refer to the degree to which the GRADE approach reliably predicts the stability of an estimate … likelihood that the first available study of a body of evidence provides a substantially different estimate … tested whether the SOE grades as a categorical variable reliably predicts the likelihood of an effect estimate … compare the effect estimates of the subsets (which we term the "gradeable effect") with the pooled effect estimate … the published meta-analysis (which we term the "true effect") to assess the stability of the effect estimate

5. S166 (pdf file)
   effectivehealthcare.ahrq.gov/sites/default/files/s166.pdf
   October 01, 2007 - In this method, a point estimate of the difference between 2 interventions is calculated by taking the … Therefore, if TBP is the direct estimate of a comparison between BNZ and placebo, and TNP is the direct … estimate of a comparison between NBNZ and placebo, then TBN is the indirect estimate of a comparison … For each outcome, we also calculated an indirect esti- mate different from the estimate presented in … We combined the direct estimate with the indirect estimate from the current study using the method described

6. Empirical Assessment of Within-Arm Correlation Imputation in Trials of Continuous Outcomes | Effective Health Care (EHC) Program
   effectivehealthcare.ahrq.gov/products/continuous-outcomes-correlation/research
   November 19, 2012 - For meta-analysis of net-changes, one must thus estimate the SE based on an arbitrarily chosen correlation … empirical results, demonstrated that imputation of values does not introduce bias in the meta-analysis estimate … some or all within-group correlation estimates are not reported does not introduce bias in the summary estimate … However, imputation can affect the SE of the summary estimate when the imputed value is different from

7. Continuous-Outcomes-Quantitative-Synthesis Methods (pdf file)
   effectivehealthcare.ahrq.gov/sites/default/files/pdf/continuous-outcomes-quantitative-synthesis_methods.pdf
   March 01, 2011 - If reported, use an ANCOVA estimate —it is an unbiased and more efficient estimator. … or whichever estimate can be calculated from the reported data. … Otherwise, the combined estimate may be biased. … The investigators should first use an ANCOVA estimate. … The investigators may choose to use the same estimate across studies in one meta-analysis.

8. Sas-Macro-Plain-Text-Version
   effectivehealthcare.ahrq.gov/sites/default/files/related_files/sas-macro-plain-text-version.txt
   December 05, 2017 - qupcase(&input); /* scan the input statement for appropriate statements */ /* OPTIONS WTMODEL MODEL ESTIMATE … ; /* initialize the descending option indicator DESC to missing */ %let desc=; /* initialize the estimate … statements list ESTIMATE to missing */ %let estimate=; /* initialize DATA to work. … /* the type of statement is determined by the first word */ /* TYPE may be OPTIONS WTMODEL MODEL or ESTIMATE … information */ %if %index(&type,ESTIMATE) %then %do; %let estimate=&estimate%qsubstr(&state,&next

9. Comparative Effectiveness and Safety: Emerging Methods - Part I | Effective Health Care (EHC) Program
   effectivehealthcare.ahrq.gov/products/safety-emerging-methods/executive
   September 25, 2007 - A Simulation-Based Evaluation of Methods to Estimate the Impact of an Adverse Event on Hospital Length … A Simulation-Based Evaluation of Methods to Estimate the Impact of an Adverse Event on Hospital Length … Can Between-Physician Differences in Prescribing Patterns Be Used to Estimate Treatment Effects? … Using Propensity Scores Subclassification to Estimate Effects of Longitudinal Treatments: An Example … Wu, , Constantine Frangakis Using Propensity Scores Subclassification to Estimate Effects of Longitudinal

10. Development of a Software Tool for Obtaining Doubly Robust Estimate of Treatment Effects | Effective Health Care Program
    effectivehealthcare.ahrq.gov/products/treatment-effects-estimates-tool/research
    December 02, 2009 - Development of a Software Tool for Obtaining Doubly Robust Estimate of Treatment Effects Research Report … Even when all relevant confounders have been measured, an unbiased estimate of the treatment effect will

11. Management of Infantile Hemangioma | Effective Health Care (EHC) Program
    effectivehealthcare.ahrq.gov/products/infantile-hemangioma/policymaker
    June 21, 2016 - Further research is very unlikely to change our confidence in the estimate of effect. … Further research may change our confidence in the estimate of effect and may change the estimate. … Further research is likely to change our confidence in the estimate of effect and is likely to change … the estimate.

12. Radiotherapy Treatments for Head and Neck Cancer (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/head-neck-cancer-update_clinician.pdf
    August 01, 2015 - Further research is very unlikely to change our confidence in the estimate of effect. … Further research may change our confidence in the estimate of effect and may change the estimate. … Further research is likely to change our confidence in the estimate of effect and is likely to change … the estimate.

13. S103 (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/s103.pdf
    October 01, 2007 - Typically, ana- lysts estimate propensity scores from a parametric model such as a logistic regression … The inverse probability-weighted estimate of treat- ment-specific effect, �a, is given by the solution … Be- cause the true censoring distributions typically are unknown, we must estimate them on the basis … Under this assump- tion, the analyst can estimate the censoring distribution using treatment-specific … Utilizing propensity scores to estimate causal treatment effects with censored time-lagged data.

14. Quantitative Synthesis: Chapter 4. Quantifying, Testing, and Exploring Statistical Heterogeneity (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/ehc-presentation-quantitative-synthesis-chapter-4.pdf
    July 01, 2019 - 14651858.CD000505 Forest plots • Poor overlap between study confidence intervals and the summary estimate … prediction intervals on the same scale as the outcome.7 ► The 95% prediction interval where the true estimate … from the summary estimate … Methods to estimate the between-study variance and its uncertainty in meta-analysis. … Methods to estimate the between-study variance and its uncertainty in meta-analysis.

15. Management of Infantile Hemangioma (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/infantile-hemangioma_policymaker.pdf
    June 01, 2016 - Further research is very unlikely to change our confidence in the estimate of effect. ��� MODERATE–Moderate … Further research may change our confidence in the estimate of effect and may change the estimate. � … Further research is likely to change our confidence in the estimate of effect and is likely to change … the estimate. ��� INSUFFICIENT–Evidence either is unavailable or does not permit a conclusion.

16. Management of Postpartum Hemorrhage: Current State of the Evidence (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/hemorrhage-postpartum_clinician.pdf
    July 01, 2016 - Further research is very unlikely to change our confidence in the estimate of effect. … Further research may change our confidence in the estimate of effect and may change the estimate. … Further research is likely to change our confidence in the estimate of effect and is likely to change … the estimate. … criteria for PPH and first-line management strategies for PPH is lacking. �� Measures currently used to estimate

17. SAS.doc (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/treatment-effects-estimates-tool_research.pdf
    April 18, 2007 - Even when all relevant confounders have been measured, an unbiased estimate of the treatment effect will … Even when all relevant confounders have been measured, an unbiased estimate will be obtained only if … or a standard (not doubly-robust) inverse probability of treatment weighted estimate. … dr1 is an estimate of the average response that we would have observed if everyone in the population … In this circumstance, bootstrapping provides a more reliable estimate of the standard error.

18. Pharmacotherapy for Adults With Alcohol Use Disorder in Outpatient Settings (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/alcohol-misuse-drug-therapy_policymaker.pdf
    August 01, 2016 - Further research is very unlikely to change our confidence in the estimate of effect. ��� MODERATE–Moderate … Further research may change our confidence in the estimate of effect and may change the estimate. � … Further research is likely to change our confidence in the estimate of effect and is likely to change … the estimate. ��� INSUFFICIENT–Evidence either is unavailable or does not permit a conclusion.

19. Transitional Care Interventions To Prevent Readmissions for People With Heart Failure (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/heart-failure-transition-care_policymaker.pdf
    August 01, 2016 - Further research is very unlikely to change our confidence in the estimate of effect. ��� MODERATE–Moderate … Further research may change our confidence in the estimate of effect and may change the estimate. � … Further research is likely to change our confidence in the estimate of effect and is likely to change … the estimate. ��� INSUFFICIENT–Evidence either is unavailable or does not permit a conclusion.

20. Core-Needle Biopsy for Breast Abnormalities (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/breast-biopsy-update_clinician.pdf
    May 01, 2016 - Further research is very unlikely to change our confidence in the estimate of effect. … Further research may change our confidence in the estimate of effect and may change the estimate. … Further research is likely to change our confidence in the estimate of effect and is likely to change … the estimate. … Sensitivity is an estimate of the proportion of all cases of cancer that are identified by a diagnostic