{"id_var":"idvar","item":"age","study":"Cohort A","domain":"Demographics","subdomain":"Age","source_dataset":"cohort_a","source_item":"age","visit":1,"coding_notes":"No change needed"}
{"id_var":"idvar","item":"height","study":"Cohort A","domain":"Demographics","subdomain":"Height","source_dataset":"cohort_a","source_item":"height_1","visit":1,"code1":"x * 2.54","code_type":"function","coding_notes":"Convert from inches to cm"}
{"id_var":"idvar","item":"height","study":"Cohort A","domain":"Demographics","subdomain":"Height","source_dataset":"cohort_a","source_item":"height_2","visit":2,"code1":"x * 2.54","code_type":"function","coding_notes":"Convert from inches to cm"}
{"id_var":"idvar","item":"height","study":"Cohort A","domain":"Demographics","subdomain":"Height","source_dataset":"cohort_a","source_item":"height_3","visit":3,"code1":"x * 2.54","code_type":"function","coding_notes":"Convert from inches to cm"}
{"id_var":"idvar","item":"weight","study":"Cohort A","domain":"Demographics","subdomain":"Weight","source_dataset":"cohort_a","source_item":"weight_1","visit":1,"code1":"x / 2.205","code_type":"function","coding_notes":"Converting from lbs to kg"}
{"id_var":"idvar","item":"weight","study":"Cohort A","domain":"Demographics","subdomain":"Weight","source_dataset":"cohort_a","source_item":"weight_2","visit":2,"code1":"x / 2.205","code_type":"function","coding_notes":"Converting from lbs to kg"}
{"id_var":"idvar","item":"weight","study":"Cohort A","domain":"Demographics","subdomain":"Weight","source_dataset":"cohort_a","source_item":"weight_3","visit":3,"code1":"x / 2.205","code_type":"function","coding_notes":"Converting from lbs to kg"}
{"id_var":"idvar","item":"education","study":"Cohort A","domain":"Demographics","subdomain":"Education","source_dataset":"cohort_a","source_item":"education","visit":1,"code1":"1 = No education/grade school; 2 = No education/grade school; 3 = High school; 4 = High school; 5 = College; 6 = Graduate/Professional","code_type":"recode category","coding_notes":"Coding values to harmonized educational categories"}
{"id_var":"ID","item":"age","study":"Cohort B","domain":"Demographics","subdomain":"Age","source_dataset":"cohort_b","source_item":"Age","visit":1,"coding_notes":"No change needed"}
{"id_var":"ID","item":"height","study":"Cohort B","domain":"Demographics","subdomain":"Height","source_dataset":"cohort_b","source_item":"hgt_in","visit":1,"code1":"x * 2.54","code_type":"function","coding_notes":"Convert from inches to cm"}
{"id_var":"ID","item":"weight","study":"Cohort B","domain":"Demographics","subdomain":"Weight","source_dataset":"cohort_b","source_item":"wgt_kg","visit":1,"coding_notes":"No change needed"}
{"id_var":"ID","item":"education","study":"Cohort B","domain":"Demographics","subdomain":"Education","source_dataset":"cohort_b","source_item":"edu_cat","visit":1,"code1":"1 = No education/grade school; 2 = High school; 3 = College; 4 = Graduate/Professional","code_type":"recode category","coding_notes":"Coding values to harmonized educational categories"}
{"id_var":"cohort_id","item":"age","study":"Cohort C","domain":"Demographics","subdomain":"Age","source_dataset":"cohort_c","source_item":"age","visit":1,"coding_notes":"No change needed"}
{"id_var":"cohort_id","item":"height","study":"Cohort C","domain":"Demographics","subdomain":"Height","source_dataset":"cohort_c","source_item":"height_cm","visit":1,"coding_notes":"No change needed"}
{"id_var":"cohort_id","item":"weight","study":"Cohort C","domain":"Demographics","subdomain":"Weight","source_dataset":"cohort_c","source_item":"weight_lbs","visit":1,"code1":"x / 2.205","code_type":"function","coding_notes":"Converted from lbs to kg"}
{"id_var":"cohort_id","item":"education","study":"Cohort C","domain":"Demographics","subdomain":"Education","source_dataset":"cohort_c","source_item":"edu","visit":1,"code1":"1 = No education/grade school; 2 = High school; 3 = College; 4 = College","code_type":"recode category","coding_notes":"Coding values to harmonized educational categories"}