Table 1.

Descriptive characteristics of study population (n = 20)

	Placebo (n = 10)	Valaciclovir (n = 9)	p value
Age (years)	35.4 ± 10.1	34.2 ± 4.7	0.739
Male (n)	8	7	1.000
Dutch ethnicity (n)	9	9	1.000
High education level# (n)	5	6	1.000
Duration of illness (years)	9.4 ± 8.1	9.9 ± 6.6	0.882
Diagnosis (n) (Code 295.xx)
Schizophrenia	8	8
Schizoaffective	2	1
Schizophreniform	0	0
Medication use
Modern antipsychotics	9	8
Classic antipsychotics	1	1
Antidepressant addition	4	3
Other addition	3	2

^#Senior general secondary education, pre-university education, higher professional education or university education.