Percentage of patients reporting ease of erythropoietin pen device use

Percentage of patients reporting ease of taking accurate dose

Visit 1 (N = 259) N(%)

Visit 2 (N = 259) N(%)

Visit 3 (N = 259) N(%)

Visit 1 (N = 259) N(%)

Visit 2 (N = 259) N(%)

Visit 3 (N = 259) N(%)

Very easy

209(80.7%)

245(94.6%)

249(96.1%)

236(91.1%)

246(95%)

249(96.1%)

Somewhat easy

049(18.9%)

014(5.4%)

10(3.9%)

22(8.5%)

13(5%)

10(3.9%)

Neither easy nor difficult

-

-

-

-

-

-

Somewhat difficult

001(0.4%)

-

-

1(0.4%)

-

-

Very difficult

-

-

-

-

-

-

P value (Chi-square test)

0.001 (Chi-square value 23.104)

0.001 (Chi-square value 30.160)

0.84 (Chi-square value 2.985)

0.001 (Chi-square value 5.469)