Table 2. Characteristics of the study, baseline characteristics.

	Mean age, year		Mean baseline SCr (mg/dL)		Mean baseline eGFR (ml/min)
Trial (Year)	Statin	Control	Statin	Control	Statin	Control	Male proportion	Diabetes Mellitus proportion	Hypertension proportion	Additional measures
PROMISS (2008)	65	66	1.29	1.25	53.46	55.40	72.5%	25.9%	63.2%	None
Toso et al. (2009)	75	76	1.20	1.18	46.00	46.00	64.5%	21.1%	60.5%	NAC
Xinwei et al. (2009)	65	66	0.82	0.83	86.50	93.60	36.0%	20.6%	63.6%	None
Zhou Xia et al. (2009)	60	61	1.04	1.08	76.88	70.54	59.0%	20.0%	75.0%	None
Acikel et al. (2010)	59	61	0.84	0.85	97.70	97.00	63.8%	24.4%	58.1%	None
Ozhan et al. (2010)	54	55	0.88	0.88	92.00	89.00	59.2%	16.2%	22.3%	NAC
Hua et al. (2010)	65	65	1.34	1.40	68.20	66.70	67.1%	26.6%	74.6%	None
ARMYDA-CIN (2011)	65	66	1.04	1.04	79.80	77.00	77.6%	28.2%	75.1%	None
Wei Li et al. (2012)	66	65	0.93	0.93	NR	NR	75.8%	28.0%	80.7%	None
NAPLES II (2012)	70	70	1.32	1.29	42.00	43.00	54.4%	41.2%	86.3%	NAC, bicarbonate
CAO et al. (2012)	63	63	0.85	0.83	109.60	106.80	57.2%	21.7%	37.2%	None
PRATO-ACS (2014)	66	66	0.95	0.96	69.90	69.30	65.7%	21.2%	55.8%	NAC
TRACK-D (2014)	62	61	1.08	1.07	74.16	74.43	65.2%	100.0%	71.9%	None

Abbreviations: ACS, acute coronary syndrome; CAG, coronary angiography; CIN, contrast induced nephropathy; CKD, chronic kidney disease; CrCl, creatinine clearance; DM, diabetes mellitus; eGFR, estimated glomerular filtration rate; LDL, low-density lipoprotein; LVEF, left ventricular ejection fraction; NAC, N-acetylcystein; NR, not reported; NS, normal saline (isotonic saline, 0.9%); NSTEMI, non ST-segment elevation myocardial infarction; PCI, percutaneous coronary intervention; SCr, serum creatinine; STEMI, ST-segment elevation myocardial infarction; UA, unstable angina.