Water Distribution System Pipe Break Failure Modeling and Analysis: Case Study of Kuwait

Table 2

Fitted coefficients for baseline hazard functions.

	N = 1100		N = 800		N = 500		N = 1275
	% censored		% censored		% censored		% censored
	70%	85%	65%	90%	65%	90%	73%
a	0.0191	0.0045	0.02458	0.0014	0.02442	0.0012	0.01405
b	−0.0012	−0.0003	−0.00148	−0.0002	−0.00148	0.00001	−0.0009
c	0.00002	0.0000	0.000019	0.0000	0.00029	0.00000	−0.00001

(h₀ = a + bt + ct²).