Table 1.
General characteristics of selected meta-analyses.
| Number of databases searched | Outcomes | Number of primary studies | Sample size (total) | Country | |
|---|---|---|---|---|---|
| Barnicot et al., 2020 | 3 | General psychopathology; Positive symptoms; Social functioning | 7 | Unknown | England: United States |
| Bighelli et al., 2018 | 8 | General psychopathology; Positive symptoms; Negative symptoms; Depressive symptoms; Functioning and distress; Quality of life | 53 (total) | 4068 (total) | Germany; Switzerland; Italy; Japan |
| Bighelli et al., 2021 | 7 | General psychopathology; Positive symptoms; Negative symptoms; Depressive symptoms; Relapse/rehospitalisation; Functioning and distress; Suicide | 72 (total) | 10,364 (total) | Germany; Italy; Spain; Switzerland; Japan |
| Bighelli et al., 2023 | 8 | Functioning | 58 | 5048 | Germany |
| Burns et al., 2014 | 4 | General psychopathology; Positive symptoms | 12 | 639 | Canada |
| Jauhar et al., 2014 | 4 | General psychopathology; Positive symptoms; Negative symptoms; Hallucinations | 52 | Unknown | Enland; Spain; Canada |
| Jones, Hacker, Meaden et al., 2018 | 7 | General psychopathology; Positive symptoms; Negative symptoms; Affective symptoms; Rehospitalisation; Relapse; Functioning and distress | 36 | 3542 | England China |
| Jones, Hacker, Xia et al., 2018 | 7 | General psychopathology; Positive symptoms; Negative symptoms; Anxiety; Rehospitalisation; Relapse; Functioning and distress | 60 | 5992 | England; China |
| Kennedy et al., 2017 | 3 | Hallucinations | 2 | 105 | England |
| Laws et al., 2018 | 2 | Functioning and distress; Quality of life | 37 | 1579 | England; Spain |
| Lincoln et al., 2008 | 2 | General psychopathology; Positive symptoms; Negative symptoms; Depressive symptoms; Rehospitalisation; Functioning and distress | 18 | 1667 | Germany |
| Lutgens et al., 2017 | 5 | Negative symptoms | 26 | Unkown | Canada |
| Lynch et al., 2010 | 3 | General psychopathology; Relapse | 9 | 581 | England; Spain |
| Mc Glanaghy et al., 2021 | 4 | General psychopathology | 25 | 1477 | England; The Netherlands |
| Mehl et al., 2015 | 5 | Delusions | 19 | Unknown | Germany |
| Naeem et al., 2016 | 8 | General psychopathology; Delusions; Hallucinations; Quality of life | 9 | 1207 | Canada; England |
| Newton-Howes et al., 2013 | 3 | General psychopathology | 9 | 602 | England; New Zealand |
| Pilling et al., 2002 | 9 | General psychopathology; Relapse/rehospitalisation | 8 | 393 | England |
| Sarin et al., 2011 | 3 | General psychopathology; Positive symptoms; Negative symptoms; Hallucinations; Depressive symptoms | 22 | 2469 | Sweden |
| Todorovic et al., 2020 | 5 | General psychopathology Positive symptoms Negative symptoms |
4 | 525 | Australia |
| Turner, Reijnders et al., 2020 | 4 | Negative symptoms | 14 | 898 | The Netherlands; England; Germany; Canada; Spain; Brazil; United States; Australia; China |
| Turner, Burger et al., 2020 | 4 | Delusions Hallucinations |
35 | 2407 | The Netherlands England |
| Turner, van der Gaag et al., 2014 | 4 | General psychopathology; Positive symptoms; Negative symptoms | 22 | 706 | The Netherlands |
| van der Gaag et al., 2014 | 3 | Delusions; Hallucinations | 18 | 1418 | The Netherlands; England |
| Velthorst et al., 2015 | 3 | Negative symptoms | 30 | 2312 | The Netherlands |
| Wykes et al., 2008 | 6 | Positive symptoms; Negative symptoms; Functioning and distress | 34 | 1964 | England |