Table 1.

Characteristics of included subjects in different age cohorts and waves of the German Oral Health Studies (DMS). a 35 to 44 years old, b 65 to 74 years old

Parameter		DMS III (1997)		DMS IV (2005)		DMS V (2014)
		n	%	n	%	n	%
(a) 35 to 44 years old
Total age cohort		655	100	925	100	966	100
Age (years)	Mean (SD), range	39 (3)	35–44 y	39 (3)	35–44 y	40 (3)	35–44 y
Sex	Male	332	50.7	471	50.9	485	50.2
	Female	323	49.3	454	49.1	481	49.8
Educational level	Low	195	30.0	222	24.3	265	26.5
	Medium	261	40.3	374	40.9	350	36.3
	High	192	29.6	318	34.8	358	37.2
Smoking pattern	Never	264	40.6	402	43.9	425	44.1
	Former	139	21.4	191	20.9	249	25.9
	Current	247	38.0	332	35.2	289	30.0
Tooth loss	Prevalence (%)	502	76.6	544	58.8	549	56.8
	Mean MT (SD), range	3.9 (2.8), 0–28	0–100	2.4 (2.8), 0–28	0–100	2.1 (2.9), 0–28	0–100
(b) 65 to 74 years old
Total age cohort		1367		1040		1042
Age (years)	Mean (SD), range	69 (2.7)	65–74 y	69 (2.7)	65–74 y	70 (2.9)	65–74 y
Sex	Male	578	42.2	480	46.2	489	46.9
	Female	789	57.8	560	53.8	553	53.1
Educational level	Low	1031	75.9	666	65.8	642	63.9
	Medium	183	14.0	183	18.1	190	18.9
	High	145	10.7	163	16.1	173	17.2
Smoking pattern	Never	815	60.1	627	62.0	545	53
	Former	358	26.4	305	29.9	362	34.9
	Current	183	13.5	88	8.6	131	12.6
Tooth loss	Prevalence (%)	1342	98.2	1013	97.4	1004	96.3
	Mean MT (SD), range	17.6 (9.1), 0–28	0–100	14.1 (9.8), 0–28	0–100	11.1 (9.1), 0–28	0–100