Age standardized characteristics of the Nurses’ Health Study women in 1992 within categories of periodontal surgery history (n = 81,132).
| Characteristic | Periodontal Surgery in Past 2 Years | |
|---|---|---|
| No | Yes | |
| Age, yrs, mean | 58.5 | 58.5 |
| Body mass index, kg/m2, mean | 26.1 | 26.1 |
| Alcohol intake, g/day, mean | 3.4 | 3.7 |
| Father’s occupation nonprofessional, % | 64.8 | 64.3 |
| Age at menarche, yrs, mean | 12.5 | 12.5 |
| Usually/very irregular menses at age 20–35 yrs, % | 13.1 | 13.2 |
| Nulliparous, % | 5.5 | 6.2 |
| Breastfeeding ≥ 12 mo, %* | 13.1 | 13.2 |
| Postmenopausal hormone use, % ** | ||
| Current | 39.7 | 40.1 |
| Past | 20.6 | 20.7 |
| Never smoked, % | 44.9 | 34.4 |
| Packs of cigarette smoking, %*** | ||
| > 10 pack-years | 37.1 | 47.6 |
| No. teeth lost past 2 years, % | ||
| None | 85.8 | 64.9 |
| 1–4 | 12.9 | 30.4 |
| 5 or more | 1.4 | 4.6 |
| No. teeth, % | ||
| None | 5.3 | 3.0 |
| 1–10 | 6.4 | 6.0 |
| 11–16 | 5.1 | 7.6 |
| 17–24 | 19.8 | 26.4 |
| 25–36 | 62.2 | 55.4 |