Table 1.
Characteristics of parents and adolescent offspring selected and enrolled into the NEFS-G3 cohort
| Parental Characteristics |
Adolescent Characteristics |
||||
|---|---|---|---|---|---|
| All NEFS G2's (n=1674) | G2's with eligible G3 offspringa (n=466) | G2's whose offspring were included in the analysis sample (n=356) | Eligible G3's (n=726) | Final analysis sample of G3 adolescents (n=559) | |
| Mean Age (SD) | 39.2 (1.9) | 40.0 (1.85) | 39.6 (1.9) | 14.0 (1.9) | 14.0 (1.7) |
| Percent female (n) | 59.2% (991) | 71.5% (333) | 77.8% (277) | 52.5% (379) | 52.2% (292) |
| G2 Race/ethnicity | |||||
| Percent white (n) | 83.5% (1354) | 81.8% (372) | 85.0% (301) | ||
| Percent non-white (n) | 16.5% (268) | 18.2% (83) | 15.7% (56) | ||
| G2 Education | |||||
| Percent college or more (n) | 57.7% (937) | 45.5% (208) | 49.0% (173) | ||
| Percent high school (n) | 36.4% (591) | 47.9% (219) | 46.4% (165) | ||
| Percent less than high school (n) | 6.0% (97) | 6.6% (30) | 5.1% (18) | ||
| G2 Smoking characteristics | |||||
| Percent lifetime regular smokers (n) | 58.5% (949) | 64.1% (293) | 62.4% (222) | ||
| Percent lifetime nicotine dependence (n) | 39.0% (625) | 46.1% (207) | 46.0% (161) | ||
a
Not included in this column are an additional 101 G2's whose adolescent children were ineligible for participation in the study based on living >100 miles from one of the study sites or not being a biological child. The prevalence of regular smoking among G2 parents whose children were ineligible for participation (66.7%) was similar to that among G2 parents with eligible children (64.1%).