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Final Report Update 1                                             Drug Effectiveness Review Project






               Figure 1: Results of literature search





                             Titles and abstracts                                 Citations excluded:
                             identified through
                                 searches:                                               n = 925
                                  n = 1167



                                            Abstracts only:
                                                  n = 36

                                                                                      Full text articles excluded:
                                            Unable to retrieve:
                                                   n = 6                                        n = 71

                                                                                      •   2 Not English language
                              Full-text articles                                      •   6 Wrong outcomes
                                 retrieved:                                           •   4 Drug not included
                                                                                      •   7 Population not included
                                  n = 200                                             •  19 Wrong publication type
                                                                                      •  33 Wrong study design

                                             Background:

                                                n = 59



                        Articles included in drug class review:
                                                                               Poor methodological quality:
                                       n = 70                                              n = 15

                                                                               for efficacy:
                      •  4 on head-to-head trials                                  •  6 on pooled data
                      •  42 on placebo controlled trials                               analysis
                      •  13 on systematic reviews or meta-                         •  8 on RCTs
                        analyses                                               for adverse events:
                      •  11 on studies, other design (e.g. pooled                  •  1 observational cohort
                        data)                                                          study










                 Alzheimer's Drugs                                                               Page 57 of 205
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