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. 2019 Nov 21;14:2071–2083. doi: 10.2147/CIA.S218641

Table 2.

Description Of The First Period Of AP Use During 2015

All Antipsychotic Users
First Period Of Use
(N=1727)
Median (IQR)
Coverage in days 73 (18–231)
N %
Antipsychotic classification
Typical 256 14.8
 Phenothiazines 44 17.2
 Butyrophenone derivatives 178 69.5
 Thioxanthene derivatives 1 0.4
 Diphenylbutylpiperidine derivatives 1 0.4
 Clotiapine 19 7.4
 Benzamides excl amisulpride 12 4.7
Atypical 1471 85.2
 Olanzapine, quetiapine 1420 82.2
 Amisulpride 4 0.2
 Other antipsychotics 47 2.3
Switch to another AP class within period of use
 No 1593 92.2
 Yes, starting with: 134 7.8
 Typical 64 47.8
 Atypical 70 52.2
Period of use
Up to 3 months 958 55.5
 1 month 526 54.9
 2 months 262 27.3
 3 months 170 17.7
More than 3 months 769 44.6
 4–6 months 237 30.8
 7–24 months 242 31.5
 > 24 months 300 39.0
End of period due to:
 Discontinuation 1479 85.6
 Death 3 0.1
 Study end 245 11.9

Abbreviations: AP, antipsychotic; IQR, interquartile range.