mecdt: Pre-processed NHANES data.
In httk: High-Throughput Toxicokinetics

mecdt

R Documentation

Pre-processed NHANES data.

NHANES data on demographics, anthropometrics, and some laboratory measures, cleaned and combined into a single data set.

mecdt

A data.table with 23620 rows and 12 variables.

seqn: NHANES unique identifier for individual respondents.
sddsrvyr: NHANES two-year cycle: one of "NHANES 2013-2014", "NHANES 2015-2016", "NHANES 2017-2018".
riagendr: Gender: "Male" or "Female"
ridreth1: Race/ethnicity category: one of "Mexican American", "Non-Hispanic White", "Non-Hispanic Black", "Other", "Other Hispanic".
ridexagm: Age in months at the time of examination (if not recorded by NHANES, it was imputed based on age at the time of screening)
ridexagy: Age in years at the time of examination (if not recorded by NHANES, it was imputed based on age at the time of screening)
bmxwt: Weight in kg
lbxscr: Serum creatinine, mg/dL
lbxhct: Hematocrit, percent by volume of blood composed of red blood cells
wtmec6yr: 6-year sample weights for combining 3 cycles, computed by dividing 2-year sample weights by 3.
bmxhtlenavg: Average of height and recumbent length if both were measured; if only one was measured, takes value of the one that was measured.
weight_class: One of Underweight, Normal, Overweight, or Obese. Assigned using methods in get_weight_class.