TABLE 1.

Parameters of Ecological Model Considered to be Shared (Subject Independent)

Parameter			Central valuea (arithmetic mean)	Distribution	Shared among subjects	Reference(s)
Description	Symbol	Unit
Daily deposition of 131I	GDS	kBq m−2 d−1	0–209,000	TLN(0.9 × AMb, 1.6, 0.4 × GM, 2.6 × GM)c	In the same settlement	(15)
Deposition velocity of 131I	Vg	m d−1	600	TLN(455, 2.1, 105, 2,000)	All	(15)
Removal rate of 131I from grass	λgrass	d−1	0.15	TR(0.13, 0.15, 0.17)d	All	(16)
Pasture grass yield	Ygrass	kg m−2	0.23–0.33	TR(0.5 × AM, AM, 1.5 × AM)	Living in the same oblast	Averin (2008)e
Coefficient of 131I interception by grass	b1,s	Unitless	Calculated	TLN(0.94 × AM, 1.4, 0.5 × GM, 2 × GM), but b1,s ≤ 0.85	In the same settlement	Averin (2008)
Daily grass consumption by cow	Ip	kg d−1	45	U(30, 60)f	All	Averin (2008)
Daily soil intake by cow	Isoil	kg d−1	0.35	U(0.2, 0.5)	All	Averin (2008)
Soil per unit of ground	Ysoil	kg m−2	1.0	TR(0.3, 1.0, 1.5)	All	(17)
Rate of 131I elimination from milk	λbm	d−1	1.0	TR(0.5, 1.0, 1.74)	All	(18)
Feed-to-cow’s milk transfer factor of 131I	fm	d L−1	0.004	TLN(0.003, 2.1, 0.0007, 0.013)	All	Averin (2008), (19)
Ratio of 131I content in goat’s to cow’s milk	Rg	Unitless	8	TLN(6.3, 2, 1.6, 25)	All	(20)
Ratio of 131I content in mother’s to cow’s milk	Rm	Unitless	0.32	TLN(0.3, 1.4, 0.15, 0.6)	All breastfed	Adapted from (21)
Culinary factor for:
Leafy vegetables	PF1	Unitless	0.8	U(0.6, 1.0)	All	(18, 22)
Milk in soup	PF5	Unitless	0.5	U(0.3, 0.7)	All
Sour milk	PF6	Unitless	0.7	U(0.5, 0.9)	All
Sour cream	PF7	Unitless	0.7	U(0.5, 0.9)	All
Soft cottage cheese	PF8	Unitless	0.6	U(0.4, 0.8)	All
Kefir	PF9	Unitless	0.7	U(0.5, 0.9)	All
Reduction factor of 131I uptake by the thyroid after stable iodine administration	RFKI(t)	Unitless	0.07–0.95	TR(0.8 × AM, AM, 1.2 × AM), but RFKI(t) ≤ 1.0	With stable iodine prophylaxis	Expert judgment
Assigned date of measurement	tm		April 30–June 17, 1986	DU(AM − 2, AM − 1, AM, AM + 1, AM + 2)g	With assigned given date of measurement	Expert judgment

^aOr range of values among cohort members.

^b $GM=AM·(\sqrt{exp({(ln\mathit{GSD})}^2)})$ [derived from (23); GM: geometric mean; AM: arithmetic mean; GSD: geometric standard deviation].

^cTLN(GM, GSD, min, max): truncated lognormal distribution with the following parameters: geometric mean (GM), geometric standard deviation (GSD), minimal value (min), maximal value (max).

^dTR(min, mode, max): triangular distribution with the following parameters: minimal value (min), mode of distribution (mode), maximal value (max).

^eV. Averin, personal communication, Minsk; January 2008.

^fU(min, max): uniform distribution with the following parameters: minimal value (min), maximal value (max).

^gDU(a₁, a₂, …, a_n): discrete uniform distribution that returns a₁, a₂, …, a_n with equal probability of n⁻¹.