| Study | Reason for exclusion |
|---|---|
| Davila 1994 | Study looked at healthy subjects |
| Ferini‐Strambi 1991 | Not a RCT |
| Gillin 1994 | Study looked at healthy subjects |
| Jokic 1999 | No untreated control group |
| Kajaste 2004 | All participants underwent weight‐loss programme prior to randomisation between CPAP and non‐CPAP control groups. |
| Mitler 1997 | Not a RCT |
| Petersen 2003 | RCT between lipase inhibitor and placebo following weight loss programme undergone by all study participants (all participants also on either CPAP or BiPAP). |
| Sampol 1998 | Not a RCT |
| Schmidt 1983 | Study focused on drug treatment rather than lifestyle modification |
| Suratt 1992 | Not a RCT |
| Watson 1992 | Not a RCT |
| Wirth 1995 | Not a RCT |
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