Use of the A2DS2 scale to predict morbidity in stroke-associated pneumonia: a systematic review and meta-analysis

BMC Neurology

Table 1 Baseline characteristics of studies that satisfied the inclusion criteria (TP = true positive, FP = false positive, TN = true negative, FN = false negative)

Author	Region	Year	Type	Sample size	TP	FP	FN	TN	The values of the A2DS2
Yang L [15]	China	2019	retrospective	2552	138	637	62	1715	4
Ren XY [16]	China	2019	retrospective	530	75	89	15	351	5
Yang R [17]	China	2019	prospective	86	16	18	3	49	5
Mao BY [18]	China	2018	prospective	80	44	7	1	28	5
Zhang Y [9]	China	2017	retrospective	2552	162	889	37	1464	3
Pi CX [19]	China	2019	retrospective	215	31	18	13	153	5
Wang N [20]	China	2018	prospective	271	85	15	18	153	5
Hang J [21]	China	2017	retrospective	1472	257	158	138	874	5
Luo XN [22]	China	2018	retrospective	203	27	19	19	138	4.5
Zhang YP [23]	China	2019	retrospective	201	24	27	7	143	7
Shan Y [24]	China	2018	retrospective	252	27	19	20	186	6.5
Yuan Y [25]	China	2018	retrospective	512	61	57	24	427	4
Yang JF [26]	China	2014	retrospective	636	80	64	12	480	7
Zhang XP [1]	China	2016	retrospective	1239	57	174	33	975	5
Shang YC [27]	China	2013	retrospective	131	30	23	8	70	5
Li Y [28]	China	2014	prospective	1142	130	70	85	857	5
Gong SY [29]	China	2016	retrospective	1569	168	455	72	874	3
Lu Y [30]	China	2015	prospective	101	49	17	2	33	5
Li L [31]	China	2014	retrospective	1279	198	78	110	893	10
Batubara CA [32]	Indonesia	2015	retrospective	32	20	6	2	4	5
Limesh V [33]	India	2019	prospective	250	44	71	2	133	5
Tu TM [34]	Singapore	2017	retrospective	731	36	173	4	518	7
Zapata AE [35]	Spain	2017	prospective	201	27	86	4	84	5
Ramírez-Moreno J.M [36]	Spain	2016	prospective	224	30	31	15	209	6
Yota K [37]	Japan	2019	retrospective	111	14	26	3	68	5
Nam KW [2]	Korea	2017	retrospective	299	24	38	18	219	5
Cugy E [38]	French	2017	retrospective	1960	126	365	43	1426	5
Helmy TA [39]	Egypt	2016	prospective	70	20	7	6	37	6
HElhasina [40]	Arab	2019	prospective	200	37	134	5	24	5

ISSN: 1471-2377