背景:精神分裂症通常是一种严重的致残性精神障碍。抗精神病药物仍然是精神病患者精神治疗的主要手段。在资源有限和人道主义背景下,关键是有几个有益的选择,低成本的抗精神病药,这需要最少的监控。我们想比较口服氟哌啶醇,作为这些环境中最可用的抗精神病药物之一,第二代抗精神病药,奥氮平.
目的:评估氟哌啶醇与奥氮平相比对精神分裂症和精神分裂症谱系障碍患者的临床益处和危害。
方法:我们搜索了基于Cochrane精神分裂症研究的试验记录,这是基于CENTRAL的每月搜索,CINAHL,ClinicalTrials.gov,Embase,ISRCTN,MEDLINE,PsycINFO,PubMed和WHOICTRP。我们筛选了所有纳入研究的参考文献。在需要澄清或数据不完整的情况下,我们联系了相关的试验作者以获取更多信息。该登记册最后一次搜索是在2023年1月14日。
方法:比较氟哌啶醇和奥氮平治疗精神分裂症和精神分裂症谱系障碍患者的随机临床试验。我们感兴趣的主要结果是全球状态的临床重要变化,复发,临床上重要的精神状态变化,锥体外系副作用,体重增加,临床上重要的生活质量变化,并由于不良反应而提前退出研究。
方法:我们独立评估和提取数据。对于二分法的结果,我们计算了风险比(RR)及其95%置信区间(CI)和95%CI的额外有益或有害结局(NNTB或NNTH)治疗所需的数量.对于连续数据,我们用95%CIs估计平均差(MD)或标准化平均差(SMD)。对于所有纳入的研究,我们评估了偏倚风险(RoB1),并使用GRADE方法创建了结果总结表.
结果:我们纳入了68项随机研究9132名参与者。我们非常不确定氟哌啶醇和奥氮平在全球状态的临床重要变化中是否存在差异(RR0.84,95%CI0.69至1.02;6项研究,3078名参与者;非常低的确定性证据)。我们非常不确定氟哌啶醇和奥氮平在复发方面是否存在差异(RR1.42,95%CI1.00至2.02;7项研究,1499名参与者;非常低的确定性证据)。与奥氮平相比,氟哌啶醇可以降低临床上重要的总体精神状态变化的发生率(RR0.70,95%CI0.60至0.81;13项研究,1210名参与者;低确定性证据)。每8个人用氟哌啶醇代替奥氮平治疗,少一个人会经历这种改善。证据表明,与奥氮平相比,氟哌啶醇可能导致锥体外系副作用大幅增加(RR3.38,95%CI2.28至5.02;14项研究,3290名参与者;低确定性证据)。每三个人使用氟哌啶醇而不是奥氮平治疗,另外一个人会经历锥体外系副作用。为了增加体重,证据表明,与奥氮平相比,氟哌啶醇的风险可能大大降低(RR0.47,95%CI0.35至0.61;18项研究,4302名参与者;低确定性证据)。每10个人用氟哌啶醇代替奥氮平治疗,少一个人会经历体重增加。一项研究表明,与奥氮平相比,氟哌啶醇可以降低临床上重要的生活质量变化的发生率(RR0.72,95%CI0.57至0.91;828名参与者;低确定性证据)。每9个人用氟哌啶醇代替奥氮平治疗,少一个人的生活质量会得到临床上重要的改善.与奥氮平相比,氟哌啶醇可能导致因不良反应而提前退出研究的发生率增加(RR1.99,95%CI1.60至2.47;21项研究,5047名参与者;低确定性证据)。每22人接受氟哌啶醇而不是奥氮平治疗,少一个人会经历这个结果。由于几个参数的不一致和透明度差,30项其他相关研究和14项纳入研究的几个终点无法评估。此外,即使在纳入的研究中,出于同样的原因,通常无法使用数据。不同结果的偏倚风险差异很大,证据的确定性从非常低到低。导致证据降级的最常见的偏倚风险是盲目(绩效偏倚)和选择性报告(报告偏倚)。
结论:总体而言,对于本综述中的主要结果,证据的确定性低至非常低,很难得出可靠的结论。我们非常不确定氟哌啶醇和奥氮平在临床上重要的全球状态和复发方面是否存在差异。奥氮平可能导致总体上稍大的精神状态临床重要变化和生活质量的临床重要变化。注意到不同的副作用:氟哌啶醇可能导致锥体外系副作用的大量增加,奥氮平可能导致体重增加的大量增加。选择的药物需要考虑副作用和个体的偏好。这些发现以及最近将奥氮平与氟哌啶醇一起列入世卫组织基本药物标准清单,应增加其在低收入和中等收入国家更容易获得的可能性,从而改善了选择,并为有精神分裂症生活经历的人提供了更大的应对副作用的能力。需要使用这些药物的适当和等效剂量的额外研究。其中一些研究需要在低收入和中等收入环境中进行,并应积极寻求与之相关的因素。抗精神病药物的研究需要以人为本,并优先考虑有精神分裂症生活经历的人感兴趣的因素。
BACKGROUND: Schizophrenia is often a severe and disabling psychiatric disorder. Antipsychotics remain the mainstay of psychotropic treatment for people with psychosis. In limited resource and humanitarian contexts, it is key to have several options for beneficial, low-cost antipsychotics, which require minimal monitoring. We wanted to compare oral
haloperidol, as one of the most available antipsychotics in these settings, with a second-generation antipsychotic, olanzapine.
OBJECTIVE: To assess the clinical benefits and harms of
haloperidol compared to olanzapine for people with schizophrenia and schizophrenia-spectrum disorders.
METHODS: We searched the Cochrane Schizophrenia study-based register of trials, which is based on monthly searches of CENTRAL, CINAHL, ClinicalTrials.gov, Embase, ISRCTN, MEDLINE, PsycINFO, PubMed and WHO ICTRP. We screened the references of all included studies. We contacted relevant authors of trials for additional information where clarification was required or where data were incomplete. The register was last searched on 14 January 2023.
METHODS: Randomised clinical trials comparing
haloperidol with olanzapine for people with schizophrenia and schizophrenia-spectrum disorders. Our main outcomes of interest were clinically important change in global state, relapse, clinically important change in mental state, extrapyramidal side effects, weight increase, clinically important change in quality of life and leaving the study early due to adverse effects.
METHODS: We independently evaluated and extracted data. For dichotomous outcomes, we calculated risk ratios (RR) and their 95% confidence intervals (CI) and the number needed to treat for an additional beneficial or harmful outcome (NNTB or NNTH) with 95% CI. For continuous data, we estimated mean differences (MD) or standardised mean differences (SMD) with 95% CIs. For all included studies, we assessed risk of bias (RoB 1) and we used the GRADE approach to create a summary of findings table.
RESULTS: We included 68 studies randomising 9132 participants. We are very uncertain whether there is a difference between
haloperidol and olanzapine in clinically important change in global state (RR 0.84, 95% CI 0.69 to 1.02; 6 studies, 3078 participants; very low-certainty evidence). We are very uncertain whether there is a difference between
haloperidol and olanzapine in relapse (RR 1.42, 95% CI 1.00 to 2.02; 7 studies, 1499 participants; very low-certainty evidence). Haloperidol may reduce the incidence of clinically important change in overall mental state compared to olanzapine (RR 0.70, 95% CI 0.60 to 0.81; 13 studies, 1210 participants; low-certainty evidence). For every eight people treated with haloperidol instead of olanzapine, one fewer person would experience this improvement. The evidence suggests that haloperidol may result in a large increase in extrapyramidal side effects compared to olanzapine (RR 3.38, 95% CI 2.28 to 5.02; 14 studies, 3290 participants; low-certainty evidence). For every three people treated with haloperidol instead of olanzapine, one additional person would experience extrapyramidal side effects. For weight gain, the evidence suggests that there may be a large reduction in the risk with haloperidol compared to olanzapine (RR 0.47, 95% CI 0.35 to 0.61; 18 studies, 4302 participants; low-certainty evidence). For every 10 people treated with haloperidol instead of olanzapine, one fewer person would experience weight increase. A single study suggests that haloperidol may reduce the incidence of clinically important change in quality of life compared to olanzapine (RR 0.72, 95% CI 0.57 to 0.91; 828 participants; low-certainty evidence). For every nine people treated with haloperidol instead of olanzapine, one fewer person would experience clinically important improvement in quality of life. Haloperidol may result in an increase in the incidence of leaving the study early due to adverse effects compared to olanzapine (RR 1.99, 95% CI 1.60 to 2.47; 21 studies, 5047 participants; low-certainty evidence). For every 22 people treated with haloperidol instead of olanzapine, one fewer person would experience this outcome. Thirty otherwise relevant studies and several endpoints from 14 included studies could not be evaluated due to inconsistencies and poor transparency of several parameters. Furthermore, even within studies that were included, it was often not possible to use data for the same reasons. Risk of bias differed substantially for different outcomes and the certainty of the evidence ranged from very low to low. The most common risks of bias leading to downgrading of the evidence were blinding (performance bias) and selective reporting (reporting bias).
CONCLUSIONS: Overall, the certainty of the evidence was low to very low for the main outcomes in this review, making it difficult to draw reliable conclusions. We are very uncertain whether there is a difference between haloperidol and olanzapine in terms of clinically important global state and relapse. Olanzapine may result in a slightly greater overall clinically important change in mental state and in a clinically important change in quality of life. Different side effect profiles were noted: haloperidol may result in a large increase in extrapyramidal side effects and olanzapine in a large increase in weight gain. The drug of choice needs to take into account side effect profiles and the preferences of the individual. These findings and the recent inclusion of olanzapine alongside haloperidol in the WHO Model List of Essential Medicines should increase the likelihood of it becoming more easily available in low- and middle- income countries, thereby improving choice and providing a greater ability to respond to side effects for people with lived experience of schizophrenia. There is a need for additional research using appropriate and equivalent dosages of these drugs. Some of this research needs to be done in low- and middle-income settings and should actively seek to account for factors relevant to these. Research on antipsychotics needs to be person-centred and prioritise factors that are of interest to people with lived experience of schizophrenia.