Table 2.

Number of teeth lost by age group of adults for simple total and adults with incidence of tooth loss in 4 years of follow-up. Piracicaba, São Paulo, Brazil, 2011–2015.

Incidence of tooth loss	Total	Young adults	Older adults	p value∗
	Mean (SD)	Mean (SD)	Mean (SD)
Simple total (n = 143)	0.91 (1.65)	0.67 (1.64)	1.14 (1.64)	0.008
Among adults with incidence (n = 51)	2.55 (1.86)	2.76 (2.33)	2.44 (1.60)	0.844

^∗Mann–Whitney U test (p < 0.05).