This is conceptually different from the

price elasticities reported in this paper and should be interpreted as the effect of a change in each person's previous year plan premium on the sum of the joint probabilities of all possible combinations of previous and current year plans that involve a switch.

For the estimation of average income and

price elasticities and average consumer welfare loss, a representative in each income quartile in 1992 is constructed using means of all relevant variables.

From the computed share elasticities it is possible to obtain the familiar quantity elasticities, as a simple relationship exists between them.(23) While all the

price elasticities we present in Part A of Table 4 are the familiar quantity elasticities, the household size and total expenditure elasticities are share elasticities.

We find negative energy cross-price elasticities around -0.2 and water

price elasticities in the order of -0.1 or smaller.

This potential results brom the different

price elasticities of demand across physician services.

First, our basic interest is in estimating disaggregate

price elasticities of demand, which are unit-independent parameters that indicate the responsiveness of demand to changes in relevant prices.

If the prices of other goods or lottery games are considered in the empirical-demand function, then the sum of all

price elasticities (own price and cross prices) is restricted to be equal to -1.

(1) This is the first attempt in the literature to estimate a simultaneous demand system for the 24 hours and to recover the entire structure of expenditure elasticities and cross

price elasticities for all hours of the day in an organized electricity market, ascertaining whether hourly electricity demands can be considered normal or luxury goods and substitutes or complements.

(7) The gasoline

price elasticities in these estimates are -0.5 and -0.4.

With regard to cross

price elasticities, Pindyck and Rubinfeld (2005, p.

It is difficult to say much about which markets: there are only a few data on

price elasticities of demand fo[[tau].sub.1]nsurance (Pauly et al., 2003; Viswanathan et al., 2006) and no data that I know of on relative elasticities in higher and lower risk groups.

Hicks own and cross

price elasticities of demand for input i with respect to its market price turns out