Study	Reason for exclusion
Barthelemy 1980	lack of random group assignment to conditions
Barthelemy 1981	non‐random group assignment
Barthelemy 1983	non‐random group assignment
Barthelemy 1985	non‐random group assignment
Bönisch 1968	varied diagnosis for participants; no control condition
Jonas 1984	non‐random group assignment
Lelord 1978	non‐random group assignment; didn't measure behaviour change
Lelord 1981	open trial; non‐random group assignment
Lelord 1982	open trial; non‐random group assignment
Martineau 1981	non‐random group assignment; non‐comparable group comparison
Martineau 1982	non‐random group assignment; didn't measure behavioral change
Martineau 1985	non‐random group assignment; didn't measure behavioural change
Martineau 1988	open trial; non‐random group assignment
Martineau 1989	open trial; non‐random group assignment
Menage 1992	open trial; non‐random group assignment
Rimland 1978	open study: non‐random group assignment of participants