. 2014 Oct;27(10):1499–1512. doi: 10.5713/ajas.2014.14060

Table 6.

Random parameter logit estimates for PRRS vaccination

	Coefficient (t-ratio)

	Non-outbreak	Outbreak	Pooled sample
Vaccine	4.11(2.13)^**	5.09(2.11)^**	4.56(3.34)^***
Compensation	2.34(10.52)^***	2.50(16.54)^***	2.41(18.26)^***
Price	−0.000125(−2.41)^**	−0.000142(−2.87)^***	−0.000129(−3.75)^***
Standard deviation of parameter distributions (t-ratio)
Vaccine	2.28(2.24)^**	0.47(0.81)	0.43(1.79)^*
Compensation	0.64(2.77)^***	0.81(11.08)^***	0.79(9.75)^***
Log-likelihood	−87.07	−81.57	−177.45
McFadden pseudo-R²	0.74	0.75	0.74
n (respondents)	51	50	101
n (choices)	306	300	606

PRRS, porcine reproductive and respiratory syndrome.

Statistical significance levels, ^*** 1%; ^** 5%; ^* 10%. Corresponding t-ratios are shown in parentheses.