Table 5.

Multivariate analysis of caries experience [percentage with decayed, missing or filled primary teeth (dmft) > 0] according to year, fluoridation status and socio-economic characteristics^‡

Variables	2008		2010		2012
	OR	95% CI	OR	95% CI	OR	95% CI
Fluoridation status
Fluoridated	1.00†		1.00†		1.00†
Newly fluoridated	1.72***	1.37–2.16	1.26NS	0.97–1.61	1.22NS	0.95–1.57
Unfluoridated	2.93***	2.01–4.27	2.40***	1.84–3.15	1.96***	1.49–2.57
Indigenous status
Non-Aboriginal	1.00†		1.00†		1.00†
Aboriginal	1.67*	1.07–2.59	1.85***	1.29–2.65	2.20***	1.54–3.12
Cardholder status
Non-cardholder	1.00†		1.00†		1.00
Cardholder	1.73***	1.39–2.15	1.65***	1.34–2.03	1.34**	1.08–1.67
Maternal country of birth
English speaking	1.00†		1.00†		1.00†
Non-English speaking	1.32NS	0.86–2.02	1.73**	1.19–2.51	1.33NS	0.91–19.5
Highest educational attainment of parent(s)§
Bachelor’s and higher	–	–	1.00†		1.00†
Certificate/Diploma	–	–	1.15NS	0.91–1.47	1.22NS	0.95–1.57
Year 12 or below	–	–	1.29NS	0.98–1.70	1.84***	1.38–2.47
Toothbrushing behaviour
Twice or more a day	1.00†		1.00†		1.00†
Once or less a day	1.00NS	0.80–1.25	1.09NS	0.88–1.35	1.22NS	0.98–1.52
Sugary drink consumption
None	1.00†		1.00†		1.00†
One or more a day	1.77***	1.40–2.22	1.55***	1.26–1.90	1.37**	1.11–1.71

NS, not significant; OR, odds ratio.

^*P < 0.05.

^**P < 0.01.

^***P < 0.001.

^†Referent.

^‡Adjusted for age and gender.

^§Highest educational attainment of parents was not asked in 2008.