Impact of sugar-sweetened beverage tax on dental caries: a simulation analysis

BMC Oral Health

Table 2 Model parameters

Parameters	Values		Unit	Source
Dental caries sub-model (SM1)	Age 15–34	Age 35+
Regular visit fraction			Dimensionless/ year	[44]
very low DMFT [female]	0.229	0.148
very low DMFT [male]	0.191	0.170
low DMFT [female]	0.306	0.357
low DMFT [male]	0.308	0.385
moderate DMFT [female]	0.521	0.643
moderate DMFT [male]	0.462	0.333
high DMFT [female]	0.571	0.332
high DMFT [male]	0.583	0.215
Treated to untreated transition			Dimensionless/ year	Expert estimation
very low DMFT	0.4	0.7
low DMFT	0.78	0.58
moderate DMFT	0.78	0.34
high DMFT	0.7	0.75
^aVery Low To Low transition rate	0.063 (0.0504–0.0756)		Dimensionless/year	Model calibration
^aLow To Moderate transition rate	0.066 (0.0528–0.0792)
^aModerate To High transition rate	0.063 (0.0504–0.0756)
Dental health utilization sub-model (SM2)
Time to adjust uptake	1		Year	Expert estimation
Initial uptake rate	VL 0.384, L 0.066, M 0.041, H 0.075		Dimensionless	[44]
Oral health behaviour sub-model (SM3)
Reference average price of SSB	Report on product price, 2000–2018		Thai Baht	[45]
^aDemand price elasticity	Low income −1.46 (− 1.168-1.752) High income − 0.39 (− 0.312–0.468)		Dimensionless	[46]
Average sugar content per SSB	0.15 (0.5–0.9)		Kg/litre	[47]
Other sugar consumption by SES [low income, high income]	Report from 2000 to 2015 and extrapolation after 2015 from 4y % change moving average			[7]
Initial self-care adherence	0.529		Dimensionless	[44]
^aElasticity of sugar consumption	0.6 (0.4–0.72)		Dimensionless	Expert estimation
^aPercent reduce SSB sugar	0.8 (0.5–0.9)		Dimensionless	Expert estimation

ISSN: 1472-6831