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Impact of midazolam vs. saline on effect size estimates in controlled trials of ketamine as a rapid-acting antidepressant.
Neuropsychopharmacology ( IF 6.6 ) Pub Date : 2019-01-17 , DOI: 10.1038/s41386-019-0317-8
Samuel T Wilkinson 1 , Cristan Farmer 2 , Elizabeth D Ballard 2 , Sanjay J Mathew 3, 4 , Michael F Grunebaum 5 , James W Murrough 6 , Peter Sos 7 , Gang Wang 8 , Ralitza Gueorguieva 1, 9 , Carlos A Zarate 2
Affiliation  

The goal of this study was to infer the effectiveness of midazolam as a comparator in preserving the blind in ketamine studies for mood disorders through patient-level analyses of efficacy trial outcomes. In this integrative data analysis (k = 9, N = 367 patients with mood disorders), clinical outcomes were compared across four groups: ketamine (midazolam-controlled), ketamine (saline-controlled), midazolam, and saline. Ketamine doses ranged from 0.5 to 0.54 mg/kg and midazolam doses ranged from 0.02 to 0.045 mg/kg. The baseline-to-Day 1 effect size was d = 0.7 (95% CI: 0.4-0.9) for ketamine (midazolam) versus midazolam and d = 1.8 (95% CI: 1.4-2.2) for ketamine (saline) versus saline. The effect of ketamine relative to control was larger in saline-controlled studies than in midazolam-controlled studies (t(276) = 2.32, p = 0.02). This was driven by a comparatively larger effect under midazolam than saline (t(111) = 5.40, p < 0.0001), whereas there was no difference between ketamine (midazolam) versus ketamine (saline) (t(177) = 0.65, p = 0.51). Model-estimated rates of response (with 95% CI) yielded similar results: ketamine (midazolam), 45% (34-56%); ketamine (saline), 46% (34-58%); midazolam, 18% (6-30%); saline, 1% (0-11%). The response rate for ketamine was higher than the control condition for both saline (t(353) = 7.41, p < 0.0001) and midazolam (t(353) = 4.59, p < 0.0001). Studies that used midazolam as a comparator yielded smaller effects of ketamine than those which used saline, which was accounted for by greater improvement following midazolam compared to saline.

中文翻译:

在氯胺酮作为速效抗抑郁药的对照试验中,咪达唑仑与盐水相比对效应量估计的影响。

这项研究的目的是通过对疗效试验结果进行患者水平的分析,推断咪达唑仑作为比较剂在保留氯胺酮治疗心境障碍盲人中的有效性。在这项综合数据分析(k = 9,N = 367例有情绪障碍的患者)中,比较了四组的临床结局:氯胺酮(咪达唑仑控制),氯胺酮(盐水控制),咪达唑仑和生理盐水。氯胺酮的剂量范围为0.5至0.54 mg / kg,咪达唑仑的剂量范围为0.02至0.045 mg / kg。氯胺酮(咪达唑仑)相对于咪达唑仑的基线至第1天的疗效大小为d = 0.7(95%CI:0.4-0.9),相对于生理盐水,氯胺酮(盐)的d = 1.8(95%CI:1.4-2.2)。在盐水对照研究中,氯胺酮相对于对照的影响要比在咪达唑仑对照研究中更大(t(276)= 2.32,p = 0.02)。这是由于咪达唑仑在生理盐水中的作用要比生理盐水更大(t(111)= 5.40,p <0.0001),而氯胺酮(咪达唑仑)与氯胺酮(盐水)之间没有差异(t(177)= 0.65,p = 0.51)。模型估计的响应率(CI为95%)产生了相似的结果:氯胺酮(咪达唑仑)为45%(34-56%);氯胺酮(咪达唑仑)为45%(34-56%)。氯胺酮(盐),46%(34-58%); 咪达唑仑18%(6-30%); 盐水1%(0-11%)。氯胺酮的响应率均高于生理盐水(t(353)= 7.41,p <0.0001)和咪达唑仑(t(353)= 4.59,p <0.0001)的对照条件。使用咪达唑仑作为比较剂的研究比使用生理盐水的研究产生的氯胺酮作用更小,这是因为与生理盐水相比,咪达唑仑使用后的改善更大。而氯胺酮(咪达唑仑)和氯胺酮(盐水)之间没有差异(t(177)= 0.65,p = 0.51)。模型估计的响应率(CI为95%)产生了相似的结果:氯胺酮(咪达唑仑)为45%(34-56%);氯胺酮(咪达唑仑)为45%(34-56%)。氯胺酮(盐),46%(34-58%); 咪达唑仑18%(6-30%); 盐水1%(0-11%)。氯胺酮的响应率均高于生理盐水(t(353)= 7.41,p <0.0001)和咪达唑仑(t(353)= 4.59,p <0.0001)的对照条件。使用咪达唑仑作比较剂的研究比使用生理盐水的研究产生的氯胺酮作用更小,这是因为与生理盐水相比,咪达唑仑使用后的改善更大。而氯胺酮(咪达唑仑)和氯胺酮(盐水)之间没有差异(t(177)= 0.65,p = 0.51)。模型估计的响应率(CI为95%)产生了相似的结果:氯胺酮(咪达唑仑)为45%(34-56%);氯胺酮(咪达唑仑)为45%(34-56%)。氯胺酮(盐),46%(34-58%); 咪达唑仑18%(6-30%); 盐水1%(0-11%)。氯胺酮的响应率均高于生理盐水(t(353)= 7.41,p <0.0001)和咪达唑仑(t(353)= 4.59,p <0.0001)的对照条件。使用咪达唑仑作为比较剂的研究比使用生理盐水的研究产生的氯胺酮作用更小,这是因为与生理盐水相比,咪达唑仑使用后的改善更大。氯胺酮(咪达唑仑),45%(34-56%); 氯胺酮(盐),46%(34-58%); 咪达唑仑18%(6-30%); 盐水1%(0-11%)。氯胺酮的响应率均高于生理盐水(t(353)= 7.41,p <0.0001)和咪达唑仑(t(353)= 4.59,p <0.0001)的对照条件。使用咪达唑仑作为比较剂的研究比使用生理盐水的研究产生的氯胺酮作用更小,这是因为与生理盐水相比,咪达唑仑使用后的改善更大。氯胺酮(咪达唑仑),45%(34-56%); 氯胺酮(盐),46%(34-58%); 咪达唑仑18%(6-30%); 盐水1%(0-11%)。氯胺酮的响应率均高于生理盐水(t(353)= 7.41,p <0.0001)和咪达唑仑(t(353)= 4.59,p <0.0001)的对照条件。使用咪达唑仑作为比较剂的研究比使用生理盐水的研究产生的氯胺酮作用更小,这是因为与生理盐水相比,咪达唑仑使用后的改善更大。
更新日期:2019-01-26
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