A Systematic Review of Healthcare Big Data

Table 2

Screening stages of research articles.

Electronic search		Article selection based on search string			Result
		Big data	Big data, healthcare	BDA
Journals	ScienceDirect	2852	642	348	3842
	IEEE Xplore	4080	129	304	4513
First screening based on year (2015–2019)
Journals	ScienceDirect	2424	543	290	3257
	IEEE Xplore	3578	123	271	3972
Second screening based on title/abstract/keywords
Journals	ScienceDirect	464	34	48	546
	IEEE Xplore	429	32	23	484
Final screening based on abstract
Journals	ScienceDirect		7		34
	IEEE Xplore		27