The calibrated sample weight is the calibrated, trimmed, non-response adjusted reciprocal of a participant's probability of selection into the HCHS/SOL study. The trimmed, nonresponse adjusted sample weights were calibrated using first the 7-category Hispanic Background distribution and then the 12-category age group/gender distribution using the 2010 Decennial Census. This variable is used for analyses purposes only.

The normalized sample weight is the overall normalized, calibrated, trimmed, nonresponse adjusted (household and person-level) reciprocal of a participant's probability of selection into the HCHS/SOL study. The base sample weights, i.e. the reciprocal of a participant's probability of selection into the HCHS/SOL study, were first adjusted by household-level and person-level non-response. The non-response adjusted sample weights were then trimmed using the selected average percentile that minimizes model MSE within each field center. All sample weights that fell above the selected percentile were trimmed to the selected percentile and the trimmed difference was evenly distributed among all of the non-trimmed sample weights. The trimmed, non-response adjusted sample weights were then calibrated using first the 7-category Hispanic Background distribution and then the 12-category age group/gender distribution using the 2010 Decennial Census. Finally, these calibrated, trimmed, non-response adjusted sample weights were normalized using the weighted mean divided by weighted standard deviation of the entire HCHS/SOL sample to normalize the expanded calibrated sample weights (WEIGHT_Final_Norm_Overall). This final sample weight variable is used for analyses purposes only.

This variable estimates Glomerular filtration rate, based on serum creatinine, and demographics gender, age and race (black vs. nonblack).

This variable estimates Glomerular filtration rate, based on serum cystatin C, serum creatinine, and demographics gender, age and race (black vs. nonblack).

This variable is the grouped age of the participant.

This variable is the grouped age of the participant.

This variable is the grouped age of the participant. It is determined from the derived variable age for use with analyses requiring NHANES age standardization.

The age of immigration is defined as if participant was not born in the US 50 states, then the age of immigration is equal to the participant's age minus years lived in the US or if participant was born in the US 50 states, then the age of immigration is equal to missing.

This variable defines years lived in the US as if the participant was not born in the US, then the years lived in the US is equal to the response of PIEA7 or if participant was born in the US, then the years lived in the US is equal to the participant's age.

Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: :age: at Visit 1

Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: :age: at Visit 1

This variable calculates the years a participant smoked cigarettes. This is calculated using the difference from the age the participant began smoking to either the participant's age at baseline examination or the age that the participant quit smoking (if applicable).