Step | Description | Unweighted N Excluded by Step | Unweighted N Remaining after Step |
1 | NHANES 2007-2014 respondents |
| 40617 |
2 | & Participated in interview and MEC examination | 1451 | 39166 |
3 | & Eligible for mortality follow-up, with non-missing vital status and follow-up time | 15315 | 23851 |
4 | & Aged 21 - 79 at interview | 3070 | 20781 |
5 | & Non-missing sex, race/ethnicity, educational attainment, BMI, marital status, and IPR | 2026 | 18755 |
6 | & Non-missing urinary NNAL and urinary creatinine > 0 | 1227 | 17528 |
7 | & Never, current or former cigarette smoker reporting no other past 5-day tobacco or nicotine use at MEC examination | 2762 | 14766 |