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  1. effectivehealthcare.ahrq.gov/sites/default/files/related_files/autoimmune-disease-rapid-research.pdf
    November 01, 2024 - SRP, OHI Vs OHI Poor Outcome Mean +/- SD ● Reduction in DAS28 in both treatment and control groups … in all outcomes, but analysis to compare the mean change between groups was not reported. … received OHI only.39 However, statistical analysis to compare the mean change from baseline between groups … However, statistical analysis comparing the changes between treatment and control groups was not available … There was no difference in the change in SLEDAI between groups (p=0.89). 3.3 Key Question 2 Key
  2. effectivehealthcare.ahrq.gov/sites/default/files/related_files/cer-208-bipolar-evidence-summary.pdf
    August 01, 2018 - BD diagnoses, with relatively similar prevalence in men and women and across cultural and ethnic groups … When reported, all drug comparisons generally showed no differences between groups in serious adverse … Comparators** 5 RCTs44-49 (n=461) 6 to 12 months Depression and Mania symptoms: No difference between groups … Inactive Comparators† 2 RCTs50, 51 (n=599) 7 to 12 months Relapse Rate: No difference between groups … cannot determine if or to what extent this contributed to the few findings of nonsignificance between groups
  3. effectivehealthcare.ahrq.gov/sites/default/files/pdf/obesity-research-methods_research-protocol.pdf
    February 08, 2017 - This results in exposed and unexposed (or treatment and control) groups that are nearly identical on … all factors except for the factor under study; because the groups being compared are only randomly … are fixed; No other “interruption” at the time of the policy change; Groups would have identical … Persons just above or just below the cutoff are assumed to be very similar, so comparing these groups … As mentioned above, experimental designs are able to achieve balance between treatment and control groups
  4. effectivehealthcare.ahrq.gov/sites/default/files/related_files/blood-clots-hip-knee-surgery_executive.pdf
    March 01, 2012 - in which background prophylaxis (such as compression stockings) was not allowed in the experimental groups … the available trials were small in size leading to limited power to detect differences between the groups … A ratio of 1 indicates no difference in the odds between the two groups. … Peto’s odds ratios are used to compare two groups when the number of events is rare. 21 Publication … A ratio of one indicates no difference in the risk between the two groups.
  5. effectivehealthcare.ahrq.gov/sites/default/files/related_files/breast-biopsy-update_executive.pdf
    September 01, 2014 - Definitions of diagnostic groups based on index and reference standard test results Reference Standard … In statistical analyses, these groups were treated separately, leading to a total of 171 independent … patient groups with information on 69,804 breast lesions. … However, there was substantial uncertainty around the relative test performance estimates of the two groups … Atlanta, GA: American Cancer Society; 2013. www.cancer.org/acs/groups/content/@research/documents/ document
  6. effectivehealthcare.ahrq.gov/sites/default/files/related_files/sleep-apnea_surveillance.pdf
    April 01, 2012 - there was no statistically significant difference in adherence between the auto bilevel and CPAP groups … differences in quality of life measures or neurocognitive tests were equivocal between treatment groups … baseline patient characteristics (including sleep apnea severity) differed significantly between groups … Both groups had changes in sleepiness scores, but these were significantly less in the control group … differences in quality of life measures or neurocognitive tests were equivocal between treatment groups
  7. effectivehealthcare.ahrq.gov/sites/default/files/related_files/app-f1-surv-report-1-nonopioid-pharmacol-chronic-pain.xlsx
    May 29, 2025 - NPP_Pain Table F-1a. Pain severity for neuropathic pain Author, Year Quality Pain Population Drug Class 1 Drug Class 2 Drug 1 Drug 2 Measure Name Measure Scale Assessment Time (Wk) Time Category Grp 1 Baseline N Grp 1 Baseline Mean Pain Score Grp1 Baseline Variance Type Grp1 Baseline Variance Grp1 Baseline Lower Limi…
  8. effectivehealthcare.ahrq.gov/sites/default/files/pdf/procalcitonin-future_research.pdf
    August 01, 2014 - These research needs were grouped by specific patient groups addressed in the CER. … the duration and initiation of antibiotic therapy based on procalcitonin results in specific patient groups … Antibiotic use and other health outcomes are compared in two or more groups of patients at the beginning … Changes in outcomes from the beginning to the end of the study are compared across groups. … Changes in outcomes from the beginning to the end of the study are compared across groups.
  9. effectivehealthcare.ahrq.gov/sites/default/files/speakerbiosketches_deliberativemethodswebinar1.pdf
    May 29, 2025 - CHAT has been used by educators, community-based organizations, employer groups, and others in over
  10. effectivehealthcare.ahrq.gov/sites/default/files/pdf/key-informant-interviews-research.pdf
    December 19, 2017 - Consequently, in April 2016, they conducted focus groups with Evidence-based Practice Center (EPC) personnel … This experience was in sharp contrast to their experience in similar discussion groups sponsored by … patient advocates tend to be more familiar with scientific and medical concepts and with speaking in groups … AHRQ sought to discern the ways in which patients or caregivers were being engaged and held focus groups
  11. effectivehealthcare.ahrq.gov/sites/default/files/pdf/celiac-disease_research-protocol.pdf
    June 12, 2014 - For example, some guidelines propose a different sequence of tests for diagnosing population groups … It will address test combinations and sequences, and accuracy in specific population groups beyond those … Trials (54) Methods Studies (0) Technology Assessments (3) Economic Evaluations (3) Cochrane Groups … leukocyte antigen* OR "video capsule endoscopy" OR endoscop* OR misdiagnos* OR undiagnos* AND "Ethnic Groups … "[Mesh] OR "Minority Groups"[Mesh] OR "Socioeconomic Factors"[Mesh] OR "Continental Population Groups
  12. effectivehealthcare.ahrq.gov/sites/default/files/related_files/cesarean-birth-2010_executive.pdf
    January 01, 2010 - The scale assesses three broad perspectives: (1) selection of study groups, (2) comparability of the … groups, and (3) ascertainment of the outcome of interest. … three doula-support studies showed a reduction in cesarean births for women in the doula-support groups … labor and risk of infection, there was no systematic evidence of increased risk in the intervention groups … It is likely that, overall, we have captured studies with predominantly low-risk groups that can inform
  13. Meeting Summary (pdf file)

    effectivehealthcare.ahrq.gov/sites/default/files/pdf/stakeholders-engagement-others_slides-2011.pdf
    January 01, 2011 - Centralized patient advocate groups (e.g., Patient Advocates In Research, Consumers United for Evidence-based … organizations, getting advice from support group leads, and publicizing opportunities through online groupsGroups of new ProjectLEAD® advocates are assigned a mentor who is responsible for checking in with
  14. effectivehealthcare.ahrq.gov/sites/default/files/related_files/rheumatoid-arthritis-medicine_executive.pdf
    April 01, 2012 - Statistically significant difference between groups for quality of life (SF- 36 PCS) that did not reach … However no differences between groups for functional ability and quality of life by 2 years and no … Low No differences in serious adverse events between groups.
  15. effectivehealthcare.ahrq.gov/sites/default/files/related_files/lung-cancer-nonsurgical-therapies_executive.pdf
    June 01, 2013 - Treatment Options for NSCLC NSCLC patients can be divided into three general groups that reflect the … (e.g., other concomitant care) • Maintenance of comparable groups (including attrition, crossovers … problems occur, without the fatal flaws noted in the “poor” category below: In general, comparable groups … Studies are graded “poor” if any of the following fatal flaws exists: Groups assembled initially are … Further, the mean time from diagnosis to study treatment was different in the two groups (4.7 months
  16. effectivehealthcare.ahrq.gov/sites/default/files/related_files/ear-infection_executive.pdf
    May 01, 2013 - Providing more up-to-date and comprehensive comparative information will help many stakeholder groups … In both groups all individuals received an adenoidectomy. … ); 2 RCTs (by ears) (N=338); 1 NRCT (by ears) (N=193) No difference in measured hearing between groups … control 1 RCT (N=396 ears) Adults (16–75) with OME: differences between groups in composite measure … These groups include infants and toddlers who are developmentally vulnerable for language acquisition
  17. Untitled (pdf file)

    effectivehealthcare.ahrq.gov/sites/default/files/related_files/pelvic-pain-surveillance-151130.pdf
    July 10, 2015 - No difference between groups in pain outcomes was noted when other psychological therapies were compared … No difference between groups in pain outcomes was noted when other psychological therapies were compared … The studies included a total of 750 women-406 women in the intervention groups and 344 in the control … groups. … No difference between groups in pain outcomes was noted when other psychological therapies were compared
  18. effectivehealthcare.ahrq.gov/sites/default/files/related_files/antiplatelet-treatment_executive.pdf
    September 01, 2013 - The experimental groups in five studies (three using the VASP assay, one using the VerifyNow assay, … Control groups were given clopidogrel-based therapy at standard doses. … Clinical Outcomes Clinical-outcome comparisons between the randomized treatment groups were reported … The frequency of minor and major bleeding was not different between the study groups. … The test for interaction (a test for heterogeneity of treatment effects across genotype groups) was
  19. effectivehealthcare.ahrq.gov/sites/default/files/pdf/weight-gain-prevention_research-protocol.pdf
    January 01, 2020 - meta-analysis was the difference in change in BMI or body weight between the intervention and control groups … populations at greatest risk for weight gain including by baseline weight (normal/overweight); age groups … provide quantitative information on an approach of interest and weight or adiposity, such as focus groups … including the following: a clear description of the population, setting, approaches, and comparison groups … We will report on subgroups of interest including baseline weight (normal/overweight); age groups; life
  20. effectivehealthcare.ahrq.gov/sites/default/files/pdf/transparency-omega-3_research-protocol.pdf
    September 02, 2016 - prior to measurement of events • Prospective or retrospective cohort (single group) studies, where groups … outcome; missing outcome data were balanced in numbers, with similar reasons for missing data across groups … Group SIMILARITY AT BASELINE (**GENERAL**) There is LOW RISK OF BIAS if groups are similar at baseline … There is HIGH RISK OF BIAS if groups had different omega-3 intake/status at baseline that was not accounted … Was there incomplete COMPLIANCE with interventions across groups?

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