Table 1

 The number and percentage of stages 3, 4, and 5 ROP patients in different years

YearStage 3Stage 4Stage 5Total
2001No1179
%11.111.177.8100
2002No43815
%26.720.053.3100
2003No531220
%25.015.060.0100
2004No21112052
%40.321.238.5100
2005No91818
%50.05.644.4100