Value of statistical life year in extreme poverty: a randomized experiment of measurement methods in rural Burkina Faso

Table 10 Indifference values, VSLYs, and GDP multiple across conditions (maximum confidence level that participant fully understood the question)

	WTP_small	WTP_large	WTA_small	WTA_large
Price: mean	329	1493	641	2543
Price: median	75	249	498	1246
Price: 95% CI	(− 13)–162	(− 170)–669	398–598	758–1733
VSLY: mean	16,455	74,633	32,072	127,167
VSLY: median	3737	12,457	24,914	62,285
VSLY: 95% CI	(− 639)–8113	(− 8523)–33,437	19,904–29,924	37,914–86,656
GDP multiple (ratio of VSLY median to per capita income), tested against WHO recom-mendation^a	2.0 (p val = 0.03)	6.5 (p val = 0.02)	13.5 (p val < 0.001)	33.5 (p val < 0.001)
Observations	258	275	278	259

WTP_small indicates WTP elicitation using a small-range price list, etc. Entries in PPP adjusted 2017 international $. Price stands for the amount respondents are willing to pay or receive on an annual basis. The 95% Confidence Interval is constructed around the median, using the standard built-in procedure (the centile command) in Stata. The GDP per capita annual income in PPP dollar in Burkina Faso is $1862 in 2017
^aThe median VSLY is tested against the WHO-recommended three times per capita income, non-parametric two-sided sign tests

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