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. Author manuscript; available in PMC: 2014 Sep 19.
Published in final edited form as: Cochrane Database Syst Rev. 2010 Jan 20;(1):CD006625. doi: 10.1002/14651858.CD006625.pub2

Comparison 2. QUETIAPINE versus OLANZAPINE.

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
1 Global state: 1a. No clinically significant response (as defined by the original studies) 3 339 Risk Ratio (M-H, Random, 95% CI) 1.11 [0.86, 1.43]
2 Global state: 1b. No clinically important change (as defined by the original studies) 2 309 Risk Ratio (M-H, Random, 95% CI) 1.18 [0.89, 1.57]
 2.1 short term 1 42 Risk Ratio (M-H, Random, 95% CI) 1.36 [0.59, 3.15]
 2.2 long term 1 267 Risk Ratio (M-H, Random, 95% CI) 1.16 [0.86, 1.57]
3 Leaving the study early 11 Risk Ratio (M-H, Random, 95% CI) Subtotals only
 3.1 any reason 10 1651 Risk Ratio (M-H, Random, 95% CI) 1.22 [1.13, 1.32]
 3.2 due to adverse events 8 1573 Risk Ratio (M-H, Random, 95% CI) 0.90 [0.69, 1.18]
 3.3 due to inefficacy 8 1563 Risk Ratio (M-H, Random, 95% CI) 1.80 [1.42, 2.27]
4 Mental state: 1a. General - no clinically important change-short term (less than 50% PANSS total score reduction) 1 42 Risk Ratio (M-H, Random, 95% CI) 0.91 [0.54, 1.53]
5 Mental state: 1b. General -average endpoint score (PANSS total, high=poor) 10 1449 Mean Difference (IV, Random, 95% CI) 3.66 [1.93, 5.39]
 5.1 short term 4 142 Mean Difference (IV, Random, 95% CI) 2.17 [−1.51, 5.85]
 5.2 medium term 3 482 Mean Difference (IV, Random, 95% CI) 5.57 [1.97, 9.17]
 5.3 long term 3 825 Mean Difference (IV, Random, 95% CI) 3.40 [0.91, 5.88]
6 Mental state: 2a. Positive symptoms - no clinically important change-short term (less than 20% SAPS total score reduction) 1 30 Risk Ratio (M-H, Random, 95% CI) 15.0 [0.93, 241.20]
7 Mental state: 2b. Positive symptoms - average endpoint score (PANSS positive subscore, high=poor) 7 679 Mean Difference (IV, Random, 95% CI) 1.80 [1.02, 2.59]
 7.1 short term 3 115 Mean Difference (IV, Random, 95% CI) 1.05 [−0.75, 2.85]
 7.2 medium term 3 483 Mean Difference (IV, Random, 95% CI) 2.21 [0.90, 3.52]
 7.3 long term 1 81 Mean Difference (IV, Random, 95% CI) 1.80 [0.39, 3.21]
8 Mental state: 2c. Positive symptoms - SAPS total score - percent change-short term (high=poor) 1 30 Mean Difference (IV, Random, 95% CI) 40.84 [23.97, 57.71]
9 Mental state: 3a. Negative symptoms - no clinically important change-short term (less than 20% SANS total score reduction) 1 30 Risk Ratio (M-H, Random, 95% CI) 1.5 [0.53, 4.26]
10 Mental state: 3b. Negative symptoms - average endpoint score (PANSS negative subscore, high=poor) 7 679 Mean Difference (IV, Random, 95% CI) 0.41 [−0.36, 1.18]
 10.1 short term 3 115 Mean Difference (IV, Random, 95% CI) 0.01 [−1.72, 1.73]
 10.2 medium term 3 483 Mean Difference (IV, Random, 95% CI) 0.40 [−0.67, 1.47]
 10.3 long term 1 81 Mean Difference (IV, Random, 95% CI) 0.70 [−0.73, 2.13]
11 Mental state: 3c. Negative symptoms - average endpoint score-medium term (SANS total score, high=poor) 1 335 Mean Difference (IV, Random, 95% CI) 3.70 [−0.48, 7.88]
12 Mental state: 3d. Negative symptoms - average endpoint score-short term (SANS total score- percent change, high= poor) 1 30 Mean Difference (IV, Random, 95% CI) 2.46 [−31.90, 36.82]
13 General functioning: General - average endpoint score-medium term (GAF total score, high=poor) 1 278 Mean Difference (IV, Random, 95% CI) 3.80 [0.77, 6.83]
14 Quality of life: General -average endpoint score-medium term (QLS total score, high=poor) 1 286 Mean Difference (IV, Random, 95% CI) 1.80 [−2.42, 6.02]
15 Service use: number of participants re-hospitalised 2 876 Risk Ratio (M-H, Random, 95% CI) 1.79 [1.30, 2.47]
 15.1 medium term 1 203 Risk Ratio (M-H, Random, 95% CI) 1.8 [0.92, 3.51]
 15.2 long term 1 673 Risk Ratio (M-H, Random, 95% CI) 1.78 [1.24, 2.58]
16 Adverse effects: 1. General - at least one adverse effect 6 1269 Risk Ratio (M-H, Random, 95% CI) 0.97 [0.88, 1.06]
17 Adverse effects: 2. Death 3 1410 Risk Ratio (M-H, Random, 95% CI) 0.74 [0.13, 4.23]
 17.1 suicide attempt 2 940 Risk Ratio (M-H, Random, 95% CI) 0.35 [0.05, 2.29]
 17.2 suicide 2 470 Risk Ratio (M-H, Random, 95% CI) 4.96 [0.24, 102.41]
18 Adverse effects: 3a. Cardiac effects - QTc prolongation 1 673 Risk Ratio (M-H, Random, 95% CI) 12.96 [0.73, 229.17]
19 Adverse effects: 3b. Cardiac effects - QTc abnormalities -change from baseline in ms 3 643 Mean Difference (IV, Random, 95% CI) 4.81 [0.34, 9.28]
20 Adverse effects: 4a. Central nervous system - sedation 7 1615 Odds Ratio (M-H, Fixed, 95% CI) 0.97 [0.78, 1.20]
21 Adverse effects: 4b. Central nervous system - seizures 1 40 Risk Ratio (M-H, Random, 95% CI) 3.3 [0.14, 76.46]
22 Adverse effects: 5a. Extrapyramidal effects 8 Risk Ratio (M-H, Random, 95% CI) Subtotals only
 22.1 akathisia 6 1277 Risk Ratio (M-H, Random, 95% CI) 0.98 [0.68, 1.40]
 22.2 akinesia 1 267 Risk Ratio (M-H, Random, 95% CI) 1.02 [0.67, 1.56]
 22.3 dystonia 1 42 Risk Ratio (M-H, Random, 95% CI) 4.57 [0.23, 89.72]
 22.4 extrapyramidal symptoms 2 245 Risk Ratio (M-H, Random, 95% CI) 1.62 [0.72, 3.67]
 22.5 parkinsonism 1 40 Risk Ratio (M-H, Random, 95% CI) 0.66 [0.18, 2.41]
 22.6 tremor 1 42 Risk Ratio (M-H, Random, 95% CI) 0.39 [0.12, 1.31]
 22.7 use of antiparkinson medication 6 1090 Risk Ratio (M-H, Random, 95% CI) 0.49 [0.30, 0.79]
23 Adverse effects: 5b. Extrapyramidal effects - scale measured 2 Mean Difference (IV, Random, 95% CI) Subtotals only
 23.1 akathisia: Barnes Akathisia Scale (high=poor) 1 50 Mean Difference (IV, Random, 95% CI) −0.10 [−0.58, 0.38]
 23.2 extrapyramidal symptoms: ESRS total score (high=poor) 1 33 Mean Difference (IV, Random, 95% CI) Not estimable
 23.3 extrapyramidal symptoms: Simpson-Angus Scale (high=poor) 1 50 Mean Difference (IV, Random, 95% CI) 0.6 [−1.38, 2.58]
24 Adverse effects: 6a. Prolactin associated side effects 5 Risk Ratio (M-H, Random, 95% CI) Subtotals only
 24.1 abnormally high prolactin value 1 42 Risk Ratio (M-H, Random, 95% CI) 0.10 [0.01, 1.77]
 24.2 amenorrhea 3 252 Risk Ratio (M-H, Random, 95% CI) 0.66 [0.36, 1.21]
 24.3 galactorrhea 4 1025 Risk Ratio (M-H, Random, 95% CI) 0.66 [0.25, 1.73]
 24.4 gynecomastia 1 267 Risk Ratio (M-H, Random, 95% CI) 0.33 [0.09, 1.20]
 24.5 sexual dysfunction 4 1177 Risk Ratio (M-H, Random, 95% CI) 0.80 [0.64, 0.99]
25 Adverse effects: 6b. Prolactin -change from baseline in ng/ml 5 1021 Mean Difference (IV, Random, 95% CI) −5.89 [−11.62, −0.16]
26 Adverse effects: 7a. Metabolic - cholesterol - significant cholesterol increase 1 267 Risk Ratio (M-H, Random, 95% CI) 0.99 [0.59, 1.68]
27 Adverse effects: 7b. Metabolic - cholesterol - change from baseline in mg/dl 4 986 Mean Difference (IV, Random, 95% CI) −4.69 [−13.84, 4.45]
28 Adverse effects: 7c. Metabolic - glucose - abnormally high fasting glucose value 1 267 Risk Ratio (M-H, Random, 95% CI) 0.71 [0.33, 1.54]
29 Adverse effects: 7d. Metabolic -glucose - change from baseline in mg/dl 4 986 Mean Difference (IV, Random, 95% CI) −9.32 [−17.82, −0.82]
30 Adverse effects: 7e. Metabolic -weight - gain 8 1667 Risk Ratio (M-H, Random, 95% CI) 0.68 [0.51, 0.92]
 30.1 significant weight gain (as defined by the original studies) 7 1321 Risk Ratio (M-H, Random, 95% CI) 0.69 [0.51, 0.95]
 30.2 as “weight gain” reported adverse events 1 346 Risk Ratio (M-H, Random, 95% CI) 0.49 [0.04, 5.34]
31 Adverse effects: 7f. Metabolic -weight - change from baseline in kg 7 1173 Mean Difference (IV, Random, 95% CI) −2.68 [−4.26, −1.10]