A subset of the NHANES 1999-2010 data, filtered for adults (>=18) with diabetes and plausible caloric intake (500-3500 kcal). This data is prepared for survival analysis on the relationship between caffeine consumption and mortality.
Format
A data frame with 3780 rows and 23 variables:
- id
Respondent sequence/ID number
- survey.weight
Full sample 2-year weights
- psu
Masked pseudo-PSU
- strata
Masked pseudo-stratum
- caff
Caffeine consumption (Factor: "No consumption", "<100 mg/day", etc.)
- stime
Follow-up time in months
- status
Mortality status (0=Censored, 1=Deceased)
- sex
Sex (Factor: "Male", "Female")
- age
Age in years at interview
- race
Race/ethnicity (Factor)
- smoking
Smoking status (Factor)
- bmi.cat
BMI category (Factor)
- education
Education level (Factor)
- carbohyd
Carbohydrate in gm
- alcohol
Alcohol consumption (Factor)
- htn
Hypertension status (Factor)
- macrovascular
Macrovascular complications (Character: "No", "Yes")
- insulin
Insulin use (Factor: "No", "Yes")
- survey.cycle
Survey cycle (Character: "1999-00", etc.)
- physical.activity
Physical activity level (Factor)
- diabetes
Diabetes status (Factor, all "Yes")
- cal.total
Total calories in kcal
- survey_weight
Adjusted 6-cycle survey weight (survey.weight / 6)