# **ANNEX A: Regressions & Correlation Matrix**

|**Negative Binomial Count Model**|**for WATSAN**|**PSP in Developing Coun**|**tries**||||||
|---|---|---|---|---|---|---|---|---|
|||**Basic Model**|**Model 1**|**Model 2**|**Model 3**|**Model 4**|**Model 5**|**Model 6**|
|**Variable**|**Transf.**|**Coef (z values)**|**Coef (z values)**|**Coef (z values)**|**Coef (z values)**|**Coef (z values)**|**Coef (z values)**|**Coef (z values)**|
|Population|Natural Log|.5880215 (4.66)***|.6427902 (5.20)***|.6256657 (5.34)***|.6708151 (5.19)***|.6366447 (5.27)***|.7036564 (5.00)***|.6539809 (5.35)***|
|GDP per capita|Natural Log|.9950203 (4.63)***|.8835992 (4.16)***|.8610534 (4.23)***|.8692786 (4.02)***|.8501009 (3.97)***|1.189205 (5.29)***|.9911512 (4.86)***|
|Debt/GNI|Natural Log|.5546001 (1.70)*|.638496 (2.01)**|.6800456 (2.17)**|.5698847 (1.84)*|.6376125 (2.03)**|.7445108 (2.16)**|.7721402 (2.37)***|
|ICRG Economic Risk Index|Natural Log|3.25384 (1.80)*|2.655701 (1.52)|2.068255 (1.19)|2.932969 (1.70)*|2.669317 (1.55)|2.124386 (1.14)|2.350292 (1.32)|
|Urban Coverage Gap|Raw|.0000794 (2.54)***|.0000809 (2.71)***|.000079 (2.74)***|.000065 (2.10)**|.0000828 (2.81)***|.0000752 (2.44)***|.000094 (3.14)***|
|Years since 1st Infra PSP|Raw|(exposure variable)|(exposure variable)|(exposure variable)|(exposure variable)|(exposure variable)|(exposure variable)|(exposure variable)|
|Rule of Law|Raw||.490248 (1.92)**||||||
|Government Effectiveness|Raw|||.6573652 (2.45)***|||||
|Political Stability|Raw||||.3540364 (1.80)*||||
|Control of Corruption|Raw|||||.5965077 (1.99)**|||
|Contract Enforcement|Raw||||||-.0014658 (-1.70)*||
|ICRG Investment Profile|Natural Log|||||||1.397096 (2.35)***|
|Intercept||-28.54979 (-4.46)***|-26.38656 (-4.26)***|-24.18575 (-3.91)***|-27.22815 (-4.44)***|-26.09864 (-4.25)***|-27.19408 (-4.35)***|-29.8503 (-4.83)***|
|Observations||56|56|56|56|56|56|55|
|Likelihood Ratio Chi-Square||62.83***|66.38***|68.44***|65.90***|66.71***|63.07***|67.01***|
|Pseudo-R2||0.2036|0.2151|0.2218|0.2135|0.2162|0.2158|0.2182|
|Chi/Square(1) test of alpha = 0||36.43***|26.30***|23.52***|26.05***|25.49***|28.01***|31.51***|

_<mark>*** Significant at 1%; ** significant at 5%; * significant at 10%</mark>_

|**Correlation Matrix**||||Urban||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
||Population<br>(ln)|GDP per<br>Capita (ln)|ICRG Eco<br>Risk (ln)|<br>Coverage<br>Gap|Debt/GNI<br>(ln)|Rule of Law|Government<br>Effectiveness|Political<br>Stability|Control of<br>Corruption|Contract<br>Enforcement|ICRG Invest<br>Profile (ln)|
|Population (ln)|1|||||||||||
|GDP per Capita (ln)|-0.3424|1||||||||||
|ICRG Economic Risk (ln)|-0.0325|0.5563|1|||||||||
|Urban Coverage Gap|0.6856|-0.2406|0.0882|1||||||||
|Debt/GNI (ln)|-0.1104|-0.499|-0.3544|-0.2503|1|||||||
|Rule of Law|-0.3152|0.6434|0.3823|-0.2283|-0.3802|1||||||
|Government Effectiveness|-0.1747|0.6475|0.4753|-0.0857|-0.4441|0.9443|1|||||
|Political Stability|-0.408|0.5769|0.3719|-0.1734|-0.3075|0.8529|0.8126|1||||
|Control of Corruption|-0.3497|0.6981|0.4091|-0.2416|-0.3949|0.9455|0.9259|0.7768|1|||
|Contract Enforcement|0.0977|0.0214|-0.146|0.004|0.0722|-0.2505|-0.2749|-0.2084|-0.245|1||
|ICRG Investment Profile (ln)|-0.3468|0.5224|0.3409|-0.2883|-0.3684|0.7205|0.6879|0.7181|0.7062|-0.0706|1|

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