Study ID | Study Design | Sample size | Risk of bias | Outdoor play area size | Sedentary time | MVPA | TPA | Steps |
---|---|---|---|---|---|---|---|---|
Bell 2015 [20] | Cross-sectional | 328 | Low | ≤ 400m2 vs. > 400m2 | – | – | – | ▲ |
Boldeman 2011 [63] | Cross-sectional | 169 | High | < 1200m2 vs. 1200-3000 m2 vs. >3000m2 | – | – | – | ■ |
Chen 20201 [64] | Cross-sectional | 69 | High | ≤200m2 vs. ~900m2 | ▲ | ▲ | – | ▲ |
Chen 20202 [64] | Cross-sectional | 151 | High | ≤200m2 vs. >2700m2 | ▲ | ▲ | – | ▲ |
Dowda 2009 [26] | Cross-sectional | 299 | Low | < 387m2 vs. ≥ 387m2 | ▲ | ▲ | – | – |
Henderson 2015 [54] | Cross-sectional | 447 | Low | < 505m2 vs. ≥ 505m2 | – | ▲ | – | – |
Hinkley 2016 [60] | Cross-sectional | 731 | High | Not reported | – | – | ■ | – |
Ng 2020a [27] | Case-control | 120 | High | Not reported | – | ■ | ■ | – |
Ng 2020b [27] | Case-control | 103 | High | Not reported | – | ■ | ■ | – |
Olesen 2013 [56] | Cross-sectional | 426 | Low | 567m2-5175m2, median 2700m2 | – | ◄► | – | – |
Saunders 2019a [59] | RCT | 188 | High | <1308m2 vs. ≥ 1308m2 | – | ▲ | – | – |
Saunders 2019b [59] | RCT | 191 | High | <1308m2 vs. ≥ 1308m2 | – | ▲ | – | – |
Sugiyama 2012 [61] | Cross-sectional | 107 | High | ≤ 400m2 vs. > 400m2 | ◄► | ▲ | – | – |
Tonge 2020 [62] | Cross-sectional | 490 | High | < 400m2 vs. ≥ 400m2 | ▲ | ▲ | ▲ | – |
Summary effect direction | ▲ | ▲ | ◘ | ▲ |