Table 1.

Study characteristics

Intervention type,a n (%)
Psychological	157 (30)
Pharmacological/device	41 (8)
Service	26 (5)
Other	20 (4)
Observational	278 (53)
Study complexity,b mean (s.d.)	9.59 (4)
Clinical study group,c n (%)
Psychotic disorders	130 (25)
Mood and personality disorders	179 (34)
Services research	80 (15)
Dementias and intellectual disability	76 (15)
Addictions	37 (7)
Patient involvement,d n (%)
Consultation	200 (38)
Researcher initiated collaboration	199 (38)
Jointly/patient initiated collaboration/patient control study	120 (23)
Recompense value,c £
Median	0.00
Median for those providing compensation	30.00
Range	5–300
Readability statistics,a mean (s.d.)
Number of words	1527 (821)
Flesch index: whole sheet	58.79 (9)
Grade level: whole sheet	9.84 (2)
Flesch index: most complex section	41.50 (13)
Grade level: most complex section	13.33 (3)

^a.n = 522.

^b.n = 520.

^c.n = 502.

^d.n = 519.