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Table 1 Summary of Study Designs

From: The potential role of appetite in predicting weight changes during treatment with olanzapine

 

Study 1

Study 2

Study 3

Study 4

Patient age (years)

18 to 65

18 to 65

18 to 65

≥ 18

Study design

Double-blind

Double-blind

Open-label

Observational

Olanzapine dose (mg)

5 to 20 mg QD

5 to 20 mg QD

5 to 20 mg QD

Determined by the investigator

Adjunctive pharmacotherpay

no

no

no or

Amantadine 100 mg BID or

Metformin 500 mg BID

no

Appetite assessment scale

Eating Behavior Assessment

Platypus Appetite Rating Scale

Eating Inventory and Food Craving Inventory

Eating Attitude Scale

Dietary counseling

yes

no

yes

no

Study length (weeks)

12

16

22

24

  1. Abbreviations: BID = twice daily; QD = once daily.