Performance Assessment of Solid Waste Management following Private Partnership Operations in Lagos State, Nigeria

Table 3

Probit result on influence of productivity performance of service provider companies.

Explanatory variables	Estimates
Years of operation	0.496* (0.2975) 0.1531^+
Number of vehicles used	0.5656 (0.6737) 0.1740^+
Number of houses covered	−0.0116 (0.0145) − 0.0036^+
Adherence to regulatory arrangement	3.1568** (1.3583) 0.5470^+
Average number of times truck is serviced per month	2.4100** (1.0571) 0.7692^+
Number of daily trips	1.1001* (0.6300) 0.3390^+
Proportion of user fee recovered	1.4410 (2.9540) 0.4434^+
Operation cost of operator	−1.7271 (2.5769) 0.7140^+

Source: Field Survey Result generated from Stata, 2013.
Log likelihood = −9.3185***; chi-square = 21.74***; pseudo 𝑅²=0.5385; number of observations = 30; figures in parenthesis are standard errors of the coefficient.
⁺Marginal effect coefficient.
The ***indicates that variable is significant at 1%.
The **indicates that variable is significant at 5%.
The *indicates that variable is significant at 10%.