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

Table 1.

The ROP screening rates of medical institutions from eastern, central and western China

Survey Content Tertiary medical institutions Secondary and primary medical institutions
Eastern region (52) Central region (20) Western region (30) Eastern region (70) Central region (61) Western region (51)
ROP screening 44/84.6% 7/35.0% 17/56.7% 18/25.7% 3/4.9% 3/5.9%

Tertiary medical institutions compare: χ2 = 17.91 P = 0.000

Secondary and below medical institutions compare: χ2 = 10.57 P = 0.005