Another purpose of this study was to examine the associations of WBC category and MS by the following subgroups: age (<65 or ≧65 years), residence (city, suburban, town, or rural village), smoking status (smoker or non-smoker), drinking status (drinker or non-drinker), BMI (<25 kg/m2 or ≧25 kg/m2), and insulin resistance (yes or no). The gene discussed is INS; the disease is myeloid sarcoma.