Question is based on the information given below: Annual CancerDeath in White Male Workers in Two Industries Industry A Industry BNo. of Deaths % of All Cancer Deaths No. of Deaths % of All CancerDeaths Respiratory system 180 33 248 45 Digestive system 160 29 16029 Genitourinary 80 15 82 15 All other sites 130 23 60 11 Total 550100 550 100 Based on the preceding information, it was concludedthat workers in industry B are at higher risk of death fromrespiratory system cancer than workers in industry A. (Assume thatthe age distributions of the workers in the two industries arenearly identical.) 1. Which of the following statements is true?The conclusion reached in correct The conclusion reached may beincorrect because proportionate mortality rates were used whenage-specific mortality rates were needed The conclusion reached maybe incorrect because there was no comparison group The conclusionreach may be incorrect because proportionate mortality was usedwhen cause-specific mortality rates were needed. None of theabove
