Table 1

Characteristics of study population according to oral health status at baseline

	Number of natural teeth left				Self-rated health of teeth and gums
	None	1–9	10–19	20+	Poor	Fair	Good	Very good*	Overall
N	8797	11 423	30 013	117 464	9802	30 574	62 447	62 976	172 630
Percentage of total	5	7	18	70	6	18	38	38
Age in years (mean±SD)	64±7	63±7	60±8	56±7	59±8	59±8	58±8	57±7	58±8
Age 45–64	50	58	70	85	76	76	79	83	79
Male	37	43	49	42	48	46	43	42	43
Residing in major cities	33	38	40	46	42	42	43	46	44
Tertiary education	8	10	17	32	13	20	25	34	27
Household income ≥$70 000	9	9	19	37	12	22	29	40	30
Current smoker	15	16	12	6	25	12	7	5	8
≥15 alcoholic drinks per week	12	13	16	15	16	16	15	15	15
Highest physical activity tertile	33	32	35	36	33	32	34	39	35
Doctor-diagnosed diabetes	12	12	9	5	11	8	6	5	6
Current treatment for hypertension	29	28	23	17	23	21	20	17	19
Current treatment for hypercholesterolaemia	17	16	14	11	15	14	12	11	12
Private health insurance	43	45	59	74	35	57	70	78	68
Aspirin treated	13	12	10	7	9	9	8	7	8
Australian born	76	74	75	76	66	72	76	78	75
Overweight (BMI 25–29.99 kg/m²)	34	35	37	37	33	36	37	38	37
Obese (BMI ≥30 kg/m²)	26	26	25	19	26	23	22	19	21
MOS-PF score ≥75	62	62	73	84	58	72	80	87	78

Data are percentages unless otherwise stated. Percentages were calculated out of column totals (N), except for ‘percentage of total’ where % refers to percentage of total sample in each oral health category. There were 4933 (2.86%) participants with missing data on number of own teeth left and 6831 (3.96%) missing data on self-rated heath of teeth and gums. Overall totals include the missing cases.
*Participants who rated their health of teeth and gums as ‘excellent’ (n=16,495, 9.6%) and those who rated their health of teeth and gums as ‘very good’ (n=46,481, 26.9%) are grouped together. All of the above baseline characteristics were significantly different according to tooth loss (p<0.0001) and according to self-rated health of teeth and gums (p<0.0001); χ² tests were used to compare categorical variables; Kruskal–Wallis test was used to compare mean age.
BMI, body mass index; MOS-PF, Medical Outcomes Study—Physical Functioning.