Table 1.

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.