[Retracted] Meta-Analysis on the Anesthetic Effects of Remifentanil plus Dexmedetomidine versus Remifentanil Alone in Cardiac Surgery

Table 1

The basic characteristics of the included literature.

No.	First author	Year	Country	Sample time (year.month)	No. patients treat/con	Age ()		Sex ratio (male/female)		Study design	Outcome measured
						Treatment group	Control group	Treatment group	Control group
1	Lei Jiaxiu [14]	2018	China	2017.3~2017.9	75/75			43/32	41/34	Retrospective	①+②
2	Huo Chengjuan [15]	2019	China	2017.6~2018.8	60/60			37/23	36/24	Retrospective	① + ② + ③
3	Hao Meiling [12]	2017	China	2014.1~2015.12	30/30			17/13	19/11	Retrospective	① + ②
4	Ma Yong [16]	2016	China	2012~2015	50/50			30/20	28/22	Retrospective	① + ② + ③
5	Liang Yan [17]	2018	China	2015.10~2017.10	33/33			19/14	20/13	Retrospective	① + ②
6	Zhong Baolin [18]	2015	China	2013.4~2015.1	50/50			28/22	26/24	Retrospective	① + ② + ③
7	Jing Guangxia [19]	2014	China	2012.1~2014.1	60/60			33/27	33/27	Retrospective	① + ② + ③
8	Zhao Jun [20]	2020	China	2017.5~2018.7	31/31			18/13	17/14	Retrospective	① + ②
9	Yang Bing [21]	2018	China	2015.10~2017.10	40/40			23/17	22/18	Retrospective	① + ② + ③
10	Wang Daofu [22]	2016	China	2013.12~2015.9	50/50			29/21	28/22	Retrospective	① + ② + ③
11	Jia Yanjie [23]	2018	China	2016.5~2017.2	33/33			18/15	19/14	Retrospective	① + ②
12	Wang Xiaoying [24]	2018	China	2015.10~2018.10	20/20			11/9	10/10	Retrospective	① + ②
13	Wang Li [25]	2018	China	2016.10~2018.2	30/30			18/12	19/11	Retrospective	① + ②
14	He Xiaoxia [26]	2019	China	2018.1~2018.12	35/35			18/17	20/15	Retrospective	① + ② + ③
15	Zhi Wang [27]	2017	China	2015.1~2015.12	48/48			25/23	26/22	Retrospective	① + ②
16	Mediha Türktan [28]	2017	Turkey.	2014.12~2015.8	30/30			17/13	21/9	Retrospective	① + ②
17	Jin Sun Cho [29]	2014	Korea.	NR	45/45			36/9	36/9	Retrospective	① + ② + ③

Note: ①: mean arterial pressure, MAP; ②: heart rate, HR; ③: Ramsay score; Treat: treatment; Con: control; NR: not reported.