Effectiveness of intervention on improving breast examination skills of health staffs Breast examination skills Before (n=120) After (n=90) p Efficiency index% Preparation and questioning Satisfactory (SL,%) 64 (53, 3) 89 (98, 9) <0, 001 +85, 4 Breast examination Satisfactory (SL,%) 16 (13, 3) 90 (100, 0) <0, 001 +651, 8 Interpret: After the intervention, the rate of health staffs in all two skills increased more than before the intervention (p<0.05).