At term-equivalent age , compared with untreated controls , fewer infants treated with recombinant human erythropoietin had abnormal scores for white matter injury ( @ % -LSB- @/@ -RSB- vs @ % -LSB- @/@ -RSB- ; adjusted risk ratio -LSB- RR -RSB- , @ ; @ % CI , @-@ @ ) , white matter signal intensity ( @ % -LSB- @/@ -RSB- vs @ % -LSB- @/@ -RSB- ; adjusted RR , @ ; @ % CI , @-@ @ ) , periventricular white matter loss ( @ % -LSB- @/@ -RSB- vs @ % -LSB- @/@ -RSB- ; adjusted RR , @ ; @ % CI , @-@ @ ) , and gray matter injury ( @ % -LSB- @/@ -RSB- vs @ % -LSB- @/@ -RSB- ; adjusted RR , @ ; @ % CI , @-@ @ ) .