Pathological fractures occurred in @ ( @ % ) of @ patients assigned to @ Gy and @ ( @ % ) of @ assigned to @ Gy ( odds ratio -LSB- OR -RSB- @ , @ % CI @-@ ; p = @ ) , and spinal cord or cauda equina compressions were reported in seven ( @ % ) of @ versus two ( < @ % ) of @ , respectively ( OR @ , @ % CI @-@ ; p = @ ) .