8. Percentage relapse (remission‐maintaining studies).

Study	Comparison	Rx 1	Rx 2/control	Type of relapse
Neequaye 1990	TF (1) versus no treatment (2)	28	54	Not stated
Magrath 1976	BCG (1) versus no treatment (2)	52	58	CNS
Magrath 1973	Lomustine (1) versus no treatment (2)	38	38	CNS:
Olweny 1977	Irradiation (1) versus no treatment (2)	54	36	CNS:
Ziegler 1971	IT chemotherapy (MTX) (1) versus no treatment (2)	50	40	CNS:

BCG: Bacille‐Calmette‐Guerin 
 CNS: central nervous system 
 IT: intrathecal 
 MTX: methotrexate 
 TF: transfer factor