請問以下何種研究在實證金字塔的證據等級(quality of evidence)是最高？(A) Retrospective Case-Control Studies(B) Meta-Analysis for randomized control trial ;(C)Prospective Cohort Studies(D)Meta-Analysis for Animal Studies

Understanding the types of studies that can be included in a meta-analysis (randomized control trials, observational studies, etc.).

Meta-analysis is the process in which studies are evaluated for their validity, reliability, and applicability to answer the posed clinical question.FalseTrue

act as an academic writer to compare and contrast the sampling of the studies Only RCT or cluster-randomised controlled studies were included in the meta-analysis. Trials must have been conducted in a hospital setting among a population of older adults (65 years or older). The search identified nine papers to be included in the systematic review: four randomised controlled trials (RCT),25-28 two before and after studies,29,30 one cluster randomised controlled trial,31 one controlled trial32 and one controlled before and after study33 (see Figure 1, PRISMA flow diagram). Studies were undertaken in a variety of countries and health-care systems including the USA (n = 2), Australia (n = 2), the United Kingdom (n = 2) and one each from Sweden, the Netherlands and Chile.Lundstrom et al.25 Sweden Postoperative, geriatric ward Baseline n = 199: Intervention n = 102 (age 82.3 ± SD 6.6; 73% female) Control n = 97 (age 82.0 ± SD 5.6; 76% female)Martinez26 Chile Internal medicine ward Baseline n = 287: Intervention n = 144, (age 78.1 ± SD 6.3; 42% female) Control n = 143 (age 78.3 ± SD 6.1; 33% female)Hempenius et al.27 Netherlands Postoperative, Multicentre Baseline n = 297: Intervention n = 148 (age 77.5 ± SD 6.7; 62% female) Control n = 149 (age 77.6 ± SD 7.7; 65.8% female)Partridge28 United Kingdom Vascular surgical Baseline n=209: Intervention n = 104 (age 75.5 ± SD 6.6, 23% female) Control n = 105 (age 75.5 ± SD 6.3, 25% female)Young31 United Kingdom Care of older people and Orthopaedic Wards Baseline n = 713: Intervention n = 343 (age 82.5 ± SD 7.9, 67% female) Control n = 370 (age 83 ± SD 7.8, 69% female)In 106 systematic reviews, sample sizes of the systematicreviews ranged from 278 to 186,932; however, 27 (25%)reviews did not present sample size information clearly.Reviews were published between 2003 and 2023. Sixty three (60%) and 19 (15%) reviews provided fall preventionintervention outcomes in community and RAC settingsrespectively. The remaining reviews pooled results fromcommunity and long-term care settings (Appendix 3).Twenty-one (20%) reviews explored population subgroups such as older and younger participants, healthyolder adults, and older adults with cognitive decline. Inreviews of exercise and multifactorial interventions, fall-related outcomes were either poorer [13, 24, 25] or weresimilar to [13, 24, 26–30] populations with more frailty,higher risk of falls, or cognitive impairment compared tomore healthy counter parts. Similarly, concerning fallrelated outcomes, falls and people who have had a fall,showed greater improvement [31–34] or no diference[24, 26–30, 35, 36] across various interventions amongwomen and younger and community dwelling populations compared to older and institutionalised people.Study population The study was conducted on elderly personsaged 60 years or older who were attending the Fanara FamilyMedicine Center. Inclusion criteria: Community-dwelling persons. Exclusion criteria: Elderly people needing human assistance for performing the basic activities of daily living and thoseliving in a nursing/residential home with a terminal disease orcognitive impairment as identified by Callahan Six-itemScreener (Callahan et al. 2002). The study sample was obtainedthrough simple random sampling from registries. Based on areduction in rate of falls from 52 to 32% in a previous study(Close et al. 1999), the sample size was calculated to be 72elderly subjects + 20% dropout (14 elderly subjects) = 86 elderly subjects and was expanded to include 100.

Case control studies are:Question 4Select one:a.Always at risk of attrition biasb.Always retrospective and observationalc.Always considered to be experimental by designd.Always prospective, with the investigator looking forward in time

Question 8Answera.Case-controlb.Retrospective cohortc.Prospective cohortd.Cross-sectional