Table 3.

Comparison of self-reported and clinically-examined numbers of teeth in subjects of a regular company medical checkup and J-MICC Study

	Clinically-examined number of teeth		Self-reported number of teeth		ρ a	p-value
	min. – max.	mean ± SD	min. – max.	mean ± SD
Subjects 1
Total (1315)	4 - 32	26.6 ± 4.2	2 - 32	25.2 ± 5.1	0.68	<0.01
Male (n)
35 ~ 49 (204)	22 - 32	28.5 ± 1.8	10 - 32	27.1 ± 2.7	0.45	<0.01
50 ~ 59 (231)	7 - 32	27.8 ± 2.5	8 - 32	26.6 ± 3.4	0.62	<0.01
60 ~ 69 (249)	5 - 32	25.1 ± 5.6	5 - 32	23.0 ± 6.5	0.77	<0.01
70 ~ 87 (125)	4 - 32	24.1 ± 5.7	3 - 32	21.8 ± 6.6	0.82	<0.01
Total (809)	4 - 32	26.6 ± 4.5	3 - 32	24.9 ± 5.4	0.70	<0.01
Female (n)
35 ~ 49 (168)	11 - 32	28.0 ± 2.2	14 - 32	27.3 ± 2.2	0.46	<0.01
50 ~ 59 (161)	13 - 32	27.7 ± 2.2	10 - 32	26.8 ± 3.1	0.48	<0.01
60 ~ 69 (133)	7 - 31	24.7 ± 4.3	5 - 32	23.7 ± 5.1	0.78	<0.01
70 ~ 89 (44)	6 - 28	22.4 ± 6.3	2 - 28	21.5 ± 7.6	0.91	<0.01
Total (506)	6 - 32	26.6 ± 3.9	2 - 32	25.7 ± 4.5	0.67	<0.01
Subjects 2
Total (186)	0 - 32	26.0 ± 4.8	0 - 32	24.3 ± 5.5	0.71	<0.01
Male (n)
35 ~ 49 (20)	23 - 32	29.0 ± 2.1	20 - 32	27.4 ± 2.7	0.29	0.21
50 ~ 59 (24)	19 - 32	26.7 ± 3.2	15 - 29	24.5 ± 4.0	0.67	<0.01
60 ~ 69 (35)	4 - 29	23.8 ± 4.7	4 - 29	21.7 ± 5.0	0.64	<0.01
70 ~ 87 (1)	30	30	28	28	-	-
Total (80)	4 - 32	26.1 ± 4.3	4 - 32	24.0 ± 4.7	0.73	<0.01
Female (n)
35 ~ 49 (32)	15 - 32	27.6 ± 2.9	15 - 32	27.2 ± 2.9	0.57	<0.01
50 ~ 59 (47)	14 - 32	26.5 ± 3.0	10 - 30	24.6 ± 4.6	0.57	<0.01
60 ~ 69 (25)	0 - 30	23.0 ± 8.9	0 - 29	20.8 ± 9.1	0.71	<0.01
70 ~ 89 (2)	20 - 23	21.5 ± 2.1	21 - 21	21.0 ± 0	-	-
Total (106)	0 - 32	25.9 ± 5.3	0 - 32	24.4 ± 6.0	0.70	<0.01

Subjects 1: Subjects of a regular company medical checkup

Subjects 2: Subjects of J-MCC Study

min minimum, max maximum, SD standard deviation

^aSpearman’s rank correlation coefficient