Demographic and clinical oral health data at the 1985 baseline examination of the 1390 subjects who were dead or alive by the follow-up year of 2009
| Dead (n=58) | Alive (n=1332) | p Value* | |
| Number, mean ± SD | Number, mean ± SD | ||
| Gender (female/male) | 22/36 | 691/641 | <0.05 |
| Age in 1985 (years) | 36.5±2.9 | 35.5±2.8 | <0.05 |
| Education (compulsary school/higher) | 14/44 | 221/1111 | <0.001 |
| Smoking (pack-year) | 3090.7±3170.5 | 2113.0±2901.5 | <0.05 |
| Income (Swedish Crowns × 1000) | 200.5±126.1 | 180.0±99.7 | NS |
| Plaque index | 0.87±0.62 | 0.67±0.46 | <0.001 |
| Gingival inflammation | 1.41±0.56 | 1.17±0.46 | <0.001 |
| Calculus index | 0.57±0.68 | 0.38±0.51 | 0.008 |
| Missing teeth | 1.64±2.90 | 1.17±2.34 | NS |
| Missing molars in the mandible | 0.74±1.34 | 0.47±1.17 | NS |
Data are expressed as mean ± SD.
↵* Fisher's exact t test or Student's t test for unpaired samples as appropriate.