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. 2018 Feb 14;18:44. doi: 10.1186/s12886-018-0708-3

Table 3.

The ROP screening number from 2010 to 2012(n/%)

Organization level 2012 2011 2010
Tertiary medical institutions 30,547/87.1% 23,045/83.3% 16,125/79.7%
Secondary and below medical institutions 7799/12.9% 4630/16.7% 2382/20.3%
Sum 38,346 27,675 18,507

χ2 = 499.5 P < 0.0001