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| Article | IPS | TAU | ||||
|---|---|---|---|---|---|---|
| Mean | SD | N | Mean | SD | N | |
| Burns 2009 | 55.5 | 11.94 | 156 | 55.4 | 13.04 | 156 |
| Heslin 2011 | 56.1 | 16.4 | 93 | 56.8 | 18.7 | 95 |
| Hoffman 2012 | 55.2 | 9.1 | 46 | 55.3 | 9.1 | 54 |
| Howard 2010 | 53.34 | 14.75 | 98 | 52.46 | 13.16 | 99 |
| Zhang 2017 | 63.69 | 2.23 | 54 | 62.5 | 1.97 | 54 |
