Table 4.

Incidence rate ratios (IRRs), 95% confidence intervals, and P values for those characteristics which were associated with sugar-sweetened beverage consumption; toothbrushing at least twice per day (supervised); having visited a dentist; and parent's perception of their child's oral health.

			^d1 surfaces (decayed surfaces)			d3 surfaces (decayed surfaces)
Oral health behaviour	Comparison	n	†IRR	95% confidenceinterval	P value	†IRR	95% confidence intervals	P value
Soft drink	*Once or more per week: Never/rarely	1,701	1.32	1.23-1.42	<.001	1.66	1.48-1.86	<.001
Fruit juice/cordial	*Once or more per week: Never/rarely	1,692	1.22	1.13-1.32	<.001	1.54	1.34-1.77	<.001
Flavoured milk	*Once or more per week: Never/rarely	1,671	1.16	1.09-1.25	.001	1.17	1.05-1.32	.006
Brushed teeth at least twice per day (supervised)	Yes: No	1,748	0.99	0.92-1.05	.676	0.95	0.85-1.06	.352
History of a dental visit	Yes: No	1,723	1.22	1.14-1.31	<.001	1.48	1.32-1.66	<.001
Parents report: child's oral health	Fair/poor: Excellent	1,736	3.39	2.98-3.85	<.001	9.33	7.22-12.06	<.001
	Fair/poor: Very good		2.73	2.47-3.01	<.001	4.56	3.91-5.32	<.001
	Fair/poor: Good		1.96	1.78-2.16	<.001	2.43	2.11-2.80	<.001
	Good: Very good		1.39	1.28-1.51	<.001	1.88	1.64-2.15	<.001
	Good: Excellent		1.73	1.55-1.93	<.001	3.84	3.01-4.90	<.001
	Very good: Excellent		1.24	1.11-1.39	<.001	2.05	1.59-2.63	<.001

^⁎Parent reported beverage consumption.

^†Model adjusts for age, gender, parent/guardian with health care card/pensioner card, ATSI, remoteness and language spoken at home.

^{^}d¹ refers to ICDAS II decay levels: 1-6; d³ refers to ICDAS II decay levels 3-6.