Mental state: average change score (Positive and Negative Syndrome Scale (PANSS), positive=improvement, data skewed)
Study	Intervention	Mean	SD	N
general psychopathology
Krakowski 2006	Haloperidol	0.64	8.2	36
Krakowski 2006	Olanzapine	2.69	5.5	37
negative symptoms
Krakowski 2006	Haloperidol	0.44	4.6	36
Krakowski 2006	Olanzapine	0.72	3.0	37
positive symptoms
Krakowski 2006	Haloperidol	‐0.5	5.3	36
Krakowski 2006	Olanzapine	1.41	3.6	37
total
Krakowski 2006	Haloperidol	0.58	1.52	36
Krakowski 2006	Olanzapine	4.83	9.7	37