. 2021 Jul 8;72(3):381–391. doi: 10.1016/j.identj.2021.05.013

Table 3.

Incidence rate ratios (IRRs) for the Poisson mixed model (decayed surfaces).

		^{^}d¹ surfaces (decayed surfaces)			d³ surfaces (decayed surfaces)
Variable	Variable category	^†IRR	95% confidence intervals	P value	^†IRR	95% confidence intervals	P value
Age	4 years: 3 years	1.51	1.37-1.66	<.001	2.26	1.89-2.71	<.001
	5 years: 3 years	1.81	1.59-2.05	<.001	3.09	2.48-3.84	<.001
	5 years: 4 years	1.20	1.09-1.32	<.001	1.36	1.17-1.59	<.001
Gender	Male: Female	1.14	1.07-1.22	<.001	1.08	0.97-1.21	.147
Parent-Indigenous status	Parent ATSI: non ATSI	1.56	1.32-1.85	<.001	1.91	1.50-2.43	<.001
Parent-PHCC	Parent PHCC: Parent non PHCC	1.45	1.35-1.56	<.001	1.76	1.57-1.97	<.001
EMLaH	Parent not EMLaH: Parent EMLaH	1.83	1.66-2.02	<.001	2.09	1.80-2.43	<.001
Remoteness	Inner regional: Major cities	1.05	0.87-1.28	.588	0.74	0.51-1.08	.115
	Outer regional: Major cities	0.90	0.65-1.24	.525	0.92	0.50-1.68	.789
	Outer regional: Inner regional	0.85	0.64-1.15	.298	1.24	0.71-2.17	.448

^†

Model adjusts for age, gender, parent/guardian with health care card/pensioner card, ATSI, remoteness and language spoken at home. (Overall model P value < .001) (n = 1,753).

^{^}

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