TABLE 1—

Model Parameters and Assumptions for Deterministic Markov Model for Primary Molar Pit-and-Fissure Sealants: Iowa Medicaid, 2008–2011

	Baseline Valuea	Distribution (SD) for Probabilistic Sensitivity Analysisb	Reference
Monthly transition probabilities
Natural to sealed tooth	0.004590	b (0.004590)	Iowa Medicaid data
Natural to restored tooth	0.003570	b (0.000357)	Dye et al.10
Natural to extracted tooth	0.000318	b (0.000318)	Dye et al.10; Iowa Medicaid data
Sealed to natural tooth	0.002940	b (0.000353)c	Kühnisch et al.27
Restored to extracted tooth	0.000318	b (0.000318)	Dye et al.10; Iowa Medicaid data
Costs, 2012 US$d
Natural tooth	0.00	…	Authors’ assumption
Sealant (D1351)	20.27	γ ($20.27)	Iowa Medicaid dental fee schedule
Restoration (average cost of 7 most common CDT codese)	64.93	γ ($64.93)	Iowa Medicaid dental fee schedule
Extraction (D7140)	50.67	γ ($50.67)	Iowa Medicaid dental fee schedule
Adult tooth	0.00	…	Authors’ assumption
Discount, %	2	…	Krahn and Gafni28

Note. CDT = current dental terminology.

^aMonthly probability of transitioning from 1 state to another or 1-time cost associated with state.

^bThe b distribution assumed for transition probabilities (on the basis of 10% of SD except where noted) and γ distribution assumed for cost parameter estimates

^cOn the basis of 12% SD from empirical estimates. Variation in 1-way sensitivity analysis not evenly spaced on both sides of the mean value to account for skewed data in Kühnisch et al.²⁷

^dCosts were estimated by consulting the October 2012 Iowa Medicaid dental fee schedule using CDT codes.

^eCDT codes D2140, D2150, D2330, D2930, D2931, D2932, D3220.