TABLE 1.

Log likelihoods of hazard models^a

Origin of data	Log likelihood for hazard model
	Nonparametric	Constant	Exponential	Impulse
Netherlands	−102.2	−199.2	−101.4	−101.4
Vietnam	−38.6	−40.4	−38.4	−38.8
San Francisco	−27.3	−28.6	−26.8	−27.3
Cape Town	−58.6	−62.2	−59.5	−57.1
Germany	−13.4	−14.0	−13.7	−13.8

^aNonparametric, a nonparametric model of the hazard; constant, the hazard does not change over time; exponential, the hazard decays exponentially with time; impulse, an almost immediate change at the origin, followed by a (low) constant hazard.