Table 1 The baseline characteristics of included studies
First author | Year | Country | Interventions | Total | Sample size | Age (years) | PMID | Type of study | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
T1 | T2 | T3 | T4 | T1 | T2 | T3 | T4 | T1 | T2 | T3 | T4 | ||||||
Seo SS [20] | 2009 | Korea | A | B | C | D | 111 | 31 | 54 | 20 | 6 | 66.2 (52–72) | 66.2 (52–72) | 66.2 (52–72) | 66.2 (52–72) | 19835308 | Corhot study |
Geijsen GJ [21] | 2014 | Germany | A | D | – | – | 27 | 16 | 11 | – | – | 67 ± 9.6 | 67 ± 9.6 | – | – | 23677140 | Corhot study |
Wang JT [22] | 2015 | China | B | D | – | – | 89 | 31 | 58 | – | – | 62.14 ± 5.37 | 61.07 ± 5.74 | – | – | 26777708 | Corhot study |
Degen RM [23] | 2017 | England | A | D | – | – | 391 | 245 | 146 | – | – | 76 ± 9 | 76 ± 9 | – | – | 29183086 | Corhot study |
Lee OS [24] | 2018 | Korea | B | C | – | – | 211 | 104 | 107 | – | – | 72.1 ± 7.1 | 71.9 ± 7 | – | – | 29195851 | Corhot study |