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This variable is an indicator of household sample address allocation and distribution for HCHS/SOL recruitment.

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 FC-specific normalized sample weight is the field center specific normalized, calibrated, trimmed, non-response adjusted (household and person-level) reciprocal of a participant's probability of selection into the HCHS/SOL study. The calibrated, trimmed, non-response adjusted sample weights were normalized using the weighted mean divided by weighted standard deviation calculated for each field center separately and used to normalize the expanded calibrated sample weights (WEIGHT_Final_Norm_Center). This final sample weight variable is used for analyses purposes only when the subpopulation is restricted to within a single site.

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 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).

Cause of death came from death certificates with an internal adjudication process to categorize cause of death into grouping for research purposes. Death certificate searches were completed on a regular basis. Due to delays in reporting of deaths and death searches, cause of death was not available for all known deaths; based on the last search, death year was available for deaths reported through 2017. (CVD = Cardiovascular Disease)

Cause of death came from death certificates with an internal adjudication process to categorize cause of death into grouping for research purposes. Death certificate searches were completed on a regular basis. Due to delays in reporting of deaths and death searches, cause of death was not available for all known deaths; based on the last search, death year was available for deaths reported through 2017. (CVD = Cardiovascular Disease)

If no, when did you quit?

Do you cough on most days for as much as 3 months of the year?

Do you bring up phlegm from your chest on most days for as much as three months of the year?

C. Restless legs 8. In the past year, while SITTING OR LYING DOWN, have you had any of the following symptoms? a. An urge to move your legs

C. Restless legs 8. In the past year, while SITTING OR LYING DOWN, have you had any of the following symptoms? b. Unpleasant or uncomfortable feelings in your legs

In the past year, how often, on average, have you been awakened with coughing?

In the past year, how often, on average, have you been awakened with chest pain or tightness?

In the past year, how often, on average, have you been awakened with heartburn or indigestion?

In the past year, how often, on average, have you been awakened with leg cramps or leg jerks?

In the past year, how often, on average, have you been awakened with the need to go to the bathroom?

In the past year, how often, on average, have you been awakened with noise in your surroundings?

In the past year, how often, on average, have you been awakened with pain in your joints, muscles, or back?

In the past year, how often, on average, have you been awakened with shortness of breath?

In the past year, how often, on average, have you been awakened with sweats or hot flashes?

During the past year, how often have one or more members of your household been in or near the room where you slept?

During the past year, how often have one or more members of your household been in or near the room where you have slept?