4363.0.55.001 - Australian Health Survey: Users' Guide, 2011-13
ARCHIVED ISSUE Released at 11:30 AM (CANBERRA TIME) 15/04/2014
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BIOMEDICAL COMORBIDITY
The following section outlines for each biomedical comorbidity data item available the:
COMORBIDITY (BIOMEDICAL) - HBA1C Definition This data item is produced from the following self report and biomedical data for combinations of the following conditions:
For the purposes of deriving this item the following definitions were used: Cardiovascular disease To be classified as having cardiovascular disease, the following criteria were required to be met for one or more cardiovascular conditions. The following conditions were required to have been diagnosed and also be current and long-term (condition status 1):
The following conditions only required diagnosis (condition status 1,2,3):
For further information on the collection of self report cardiovascular disease, refer to the Heart and circulatory conditions page of this Users' Guide. For information on the ICD10 classifications or Condition status item used for CVD, refer to the Health Conditions page of this Users' Guide. Diabetes - HbA1c To be classified as having Diabetes (HbA1c), respondents needed to have known or newly diagnosed diabetes. This was determined based on the Diabetes prevalence - HbA1c (%) data item. For information on the Diabetes prevalence derivation, refer to the Diabetes Biomarkers page of this Users' Guide. Chronic Kidney Disease To be classified as having Chronic Kidney Disease, respondents needed to be in stages 1 to 5. This was determined based on the Chronic Kidney Disease (CKD) stages (mL/min/1.73m2) data item. For information on the stages of Chronic Kidney Disease, refer to the Chronic Kidney Disease (CKD) Biomarkers page of this Users' Guide. Population The population for this data data item are respondents aged 18 years and over who participated in the Biomedical component. This data item is available on the NHS, NNPAS and AHS files and is located on the biomedical level. Methodology Using the defined conditions, the following output categories were produced: 0. Not applicable 1. Diabetes (HBA1C) only 2. CKD only 3. CVD (self-report) only 4. Diabetes (HBA1C) and CKD only 5. Diabetes (HBA1C) and CVD (self-report) only 6. CKD and CVD (self-report) only 7. Diabetes (HBA1C) and CKD and CVD (self-report) 8. Does not have Diabetes (HBA1C) or CKD or CVD (self-report). In this item each respondent is allocated to only one category. Where people had a not known status for a test result, they were treated as not having the condition. In order to create some flexibility with the use of this item, categories 1 to 3 were produced, which contain persons with only one condition and also category 8 which contain persons with none of the conditions. To produce frequencies based on different combinations of these conditions, users can collapse categories as required. For example, to determine those people with either Diabetes or CKD, combine categories 1,2,4,5,6 and 7. To determine those people who don't have CVD, combine categories 1,2,4 and 8. COMORBIDITY (BIOMEDICAL) - FPG Definition This data item is produced from the following self report and biomedical data for combinations of the following conditions:
For the purposes of deriving this item the following definitions were used: Cardiovascular disease To be classified as having cardiovascular disease, the following criteria was required to be met for one or more cardiovascular condition. The following conditions were required to have been diagnosed and also be current and long-term (condition status 1):
The following conditions only required diagnosis (condition status 1,2,3):
For further information on the collection of self report cardiovascular disease, refer to the Heart and circulatory conditions page of this Users' Guide. For information on the self report ICD10 classifications or Condition status item used for CVD, refer to the Health Conditions page of this Users' Guide. Diabetes - FPG To be classified as having Diabetes (FPG), respondents needed to have known or newly diagnosed diabetes. This was determined based on categories 1 and 2 of the Diabetes prevalence - fasting plasma glucose (mmol/L) data item. For information on the Diabetes prevalence derivation, refer to the Diabetes Biomarkers page of this Users' Guide. Chronic Kidney Disease To be classified as having Chronic Kidney Disease, respondents needed to be in stages 1 to 5. This was determined based on the Chronic Kidney Disease (CKD) stages (mL/min/1.73m2) data item. For information on the stages of Chronic Kidney Disease, refer to the Chronic Kidney Disease (CKD) Biomarkers page of this Users' Guide. Population The population for this data item are respondents aged 18 years and over who participated in the Biomedical component and fasted for 8 hours or more. This data item is available on the NHS, NNPAS and AHS files and is located on the biomedical level. Methodology Using the defined conditions, the following output categories were produced: 0. Not applicable 1. Diabetes (FPG) only 2. CKD only 3. CVD (self-report) only 4. Diabetes (FPG) and CKD only 5. Diabetes (FPG) and CVD (self-report) only 6. CKD and CVD (self-report) only 7. Diabetes (FPG) and CKD and CVD (self-report) 8. Does not have Diabetes (FPG) or CKD or CVD (self-report) In this item each respondent is allocated to only one category. Where people had a not known status for a test result, they were treated as not having the condition. In order to create some flexibility with the use of this item, categories 1 to 3 were produced, which contain persons with only one condition and also category 8 which contain persons with none of the conditions. To produce frequencies based on different combinations of these conditions, collapse categories as required. For example, to determine those people with CVD and CKD, combine categories 6 and 7. To determine those people who don't have Diabetes (FPG), combine categories 2,3,6 and 8.
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