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. 2026 Feb 24;8:1735652. doi: 10.3389/frph.2026.1735652

Table 2.

Summary of study characteristics and quality analysis of mean duration meta-analysis.

References Country Study Period Group Sample size Age mean ± SD (year) Study type NOS
Group 1 Group 2 Group 1 Group 2 p-value
Lisa et al. (87) US 2015–2019 Prepandemic vs. During Pandemic 79 38 13.7 ± 2.2 13.0 ± 1.5 0.0053 RC 8
Zenon et al. (50) Croatia 2019–2020 Prepandemic vs. During Pandemic 68 51 14.3 ± 2.2 15.0 ± 1.5 RC 7
Sarah et al. (3) US 2019–2020 Prepandemic vs. During Pandemic 137 84 13.2 ± 17.8 23.8 ± 31.5 RPC 7
Metin et al. (73) Turkey 2015–2024 Manual detorsion vs. No manual detorsion 52 42 20.0 ± 6.0 26.0 ± 1.0 0.346 RCC 7
Qi et al. (88) China 2017–2022 Manual detorsion vs. No manual detorsion 19 47 14.9 ± 2.1 15.0 ± 3.9 RCC 8
Tiziana et al. (89) Italy 2020–2022 Manual detorsion vs. No manual detorsion 58 14 12.0 ± 2.1 11.7 ± 1.0 RCS 8
Sofia et al. (90) Portugal 2014–2018 Manual detorsion vs. No manual detorsion 58 64 14.7 ± 5.2 11.5 ± 11.9 RC 8
Mao et al. (91) China 2013–2021 Misdiagnosis vs. Confirm 27 46 5.5 ± 1.8 6.2 ± 3.5 0.0010 RC 6
Amihay et al. (92) Israel 2008–2014 Misdiagnosis vs. Confirm 12 64 9.7 ± 8.1 12.7 ± 3.7 RCC 8
Emily et al. (46) US 2018–2023 Transfer vs. No Transfer 96 37 - - 0.32 RC 9
Lisa et al. (48) US 2015–2020 Transfer vs. No Transfer 42 98 13.7 ± 1.3 14.1 ± 2.1 RC 8
Olivia et al. (55) US 2016–2018 Transfer vs. No Transfer 32 9 - - RC 7
Janae et al. (93) US 2011–2016 Transfer vs. No Transfer 36 89 13.1 ± 4.1 13.5 ± 3.6 RC 8
Puneeta et al. (75) US 2005–2011 Transfer vs. No Transfer 35 79 - - RC 8

US, United States; RC, retrospective cohort study; RCC, retrospective case–control study; PC, prospective cohort study; RCS, retrospective case series; RPC, retrospective–prospective cohort study.