Table 1.

Cost Parameters for Single Health Behavior Survey Study (n^CASI = 100; n^SAQ = 100)

Parameter Description	Parameter Label	Time (min)	Cost ($)
Costs Associated With Both Assessment Modes
Research staff wage per minute	W	–	0.25
Time to create survey	P1(q)	1,500	–
Payment per participant	SP	–	10.00
SAQ Costs
SAQ data entry platform software	SSAQ	–	0.00
Program SAQ data entry platform	$P_2^{\mathrm{SAQ}}\left(q\right)$	480	–
SAQ copy charges per participant	σ(q)	–	1.20
SAQ administration time per participant	γSAQ(q)	45.1	–
SAQ data entry and verification per participant	ϕ(q)	20.1	–
CASI Costs
Purchase of one computer	ψ	–	1,300.00
CASI software	SCASI	–	1,300.00
Program CASI software	$P_2^{\mathrm{CASI}}\left(q\right)$	990	–
CASI administration time per participant	γCASI(q)	45.5	–