Research study on bullet and cartridge case comparison finding the odds of disagreement between examiners about the evidential strength of a comparison were approximately five times larger in the blind than in the non-blind procedure, with disagreement about 42.3% and 12.5% of the proposed conclusions, respectively. Also, the odds that their proposed conclusion was reported as the final conclusion were approximately 2.5 higher for the higher-status examiners than for lower-status examiners.