Table 2 Summary of year-wise meta-analysis of studies
From: Effectiveness of interventions to improve vaccine efficacy: a systematic review and meta-analysis
Year | No. of studies | Effect size estimate |
|---|---|---|
2015 | 12 | 0.739 |
2016 | 10 | 0.690 |
2017 | 15 | 0.508 |
2018 | 12 | 0.658 |
2019 | 10 | 0.673 |
2020 | 10 | 0.673 |
2021 | 31 | 0.719 |
2022 | 28 | 0.641 |
2023 | 11 | 0.588 |