Table 5.

Recent ROP screening reports in China.

Author	Province	Screening period	Study type	Screening criteria	Number of ROP patients	Incidence of all ROP (%)	Treated-ROP rate (%)	GDP per head in 2013 ($)
Shenzhen ROP Cooperative group [14]	Shenzhen	2004.1~2013.6	Retrospective Multiple center	GA ≤ 34 W and/or BW ≤ 2000 g	9100	12.49 2004.1–2008.12 14.64% 2009.1–2013.6 11.47%	4.99 2004.1–2008.12 6.52% 2009.1–2013.6 4.26%	9474.66
Beijing ROP Epidemiology Study group [15]	Beijing	2005.1~2005.12	Retrospective Multiple centers	GA ≤ 34 W and/or BW ≤ 2000 g	639	10.8	3.6	15216.31
Xu et al. [12].	Shanghai	2010.1～2012.12	Prospective Multiple center	GA ≤ 34 W or BW ≤ 2000 g or any infant ventilated for at least 1 week or received supplemental oxygen for more than 30 days	2825	17.8	6.8	14652.98
Jin et al. [16].	Zhejiang	2005.3～2008.11	Retrospective Multiple centers	GA ≤ 34 W and/or BW ≤ 2000 g	1225	10.8	0.3	11075.57
Lin et al. [17]	Guangdong	2005.1～2008.12	Retrospective Single center	BW ≤ 2000 g	522	12.1	2.1	9474.66
Cheng et al. [18]	Shandong	2007–2010	Retrospective Single center	GA ≤ 37 W	773	11.13	4.1	9117.04
Qiu et al. [19]	Jiangxi	2005.1～2008.4	Retrospective Single center	GA ≤ 37 W and/or BW ≤ 2500 g	182	20.9	Unknown	5140.4
Chen et al. [20].	Hebei	2006.12～2007.8	Retrospective Single center	GA ≤ 36 W and/or BW ≤ 2000 g	398	30.15	2.26	6270.67
Ju et al. [21]	Qinghai	2005.7~2008.6	Retrospective Single center	GA ≤ 34 W and/or BW ≤ 2000 g	240	23.3	5.4	5918.86
Zhao et al. [22].	Shanxi	2005.1~2008.12	Retrospective Single center	GA < 37 W	572	49.6	11.5	6903.05
Zhang [23].	Henan	2006.12~2009.10	Retrospective Single center	GA < 37 W	420	26.4	2.5	5520.01