**Table A.4 Difference-in-Means Test for PSM and Non-PSM Projects: Country Context Factors (WDI)**

||Non|-PSM Proj|ects||PSM Projects||Difference in<br>M|Difference in<br>M i SD|||Obt|Mii|
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|Variable|N|Mean|SD|N|Mean|SD|eans<br>(absolute<br>value)|eans (n<br>of non-PSM<br>projects)|Robust SE|T-score|serva<br>ions|ssng<br>Observations|
|GDP per Capita, PPP||3855|3413||||||||||
|(constant 2005<br>international $)|2,059|,.<br>1|,.<br>9|1,090|3,964.6|3609|109.516|0.032|(132.692)|0.825|3,149|53|
|GDP per Capita Growth<br>(annual %)|2,071|2.9|5.3|1,090|2.2|4.8|-0.693***|-0.130***|(0.188)|-3.693|3,161|41|
|Net ODA Received (% of<br>GNI)|1,913|7|11.9|1,009|9.5|13.4|2.477***|0.209***|(0.501)|4.946|2,922|280|
|Net Bilateral Aid Flows|||||||||||||
|from DAC Donors, Total<br>(% of GDP)|2,073|0|0.1|1,090|0.1|0.1|0.013***|0.145***|(0.003)|4.025|3,163|39|
|IBRD Loans and IDA<br>Credits (DOD, % of GDP)|1,945|0.1|0.1|1,040|0.1|0.2|0.031***|0.223***|(0.006)|5.262|2,985|217|
|External Debt Stocks,|||||||||||||
|Public and Publicly<br>Guaranteed (PPG) (DOD,|1,945|0.5|0.4|1,040|0.6|0.5|0.115***|0.273***|(0.019)|5.924|2,985|217|
|% of GDP)|||||||||||||
|Fuel, Ores, and Metals<br>Exports as a Share of GDP|1,875|4.00E<br>+08|7.20E<br>+08|972|3.40E+0<br>8|8.20E<br>+08|-5.598e+07*|-0.078*|(31220550.<br>613)|-1.793|2,847|355|
|Inflation, Consumer Prices<br>(annual %)|1,996|51|289.9|1,035|55.6|341.9|4.626|0.016|(12.451)|0.372|3,031|171|
|School Enrollment,<br>Secondary (% gross)|1,962|54.9|26.7|1,031|51.8|29.6|-3.148***|-0.118***|(1.101)|-2.860|2,993|209|
|Life Expectancy at Birth,<br>Total (years)|2,076|63.8|8.7|1,090|62.2|9.9|-1.671***|-0.193***|(0.355)|-4.704|3,166|36|
|Population, Total|2,076|1.90E<br>+08|3.80E<br>+08|1,091|7911756<br>9.7|2.10E<br>+08|-<br>1.116e+08**<br>*|-0.298***|(10423965.<br>768)|-10.709|3,167|35|

_Note:_ GDP = gross domestic product; PPP = purchasing power parity; ODA = official development assistance; DAC = Development Assistance Committee; IBRD = International Bank for Reconstruction and Development; WDI = World Development Indicators; IDA = International Development Association; DOD = debt outstanding and disbursed.

**Table A.5 Difference-in-Means Test between PSM and Non-PSM Projects: Reform Content Variables**

|Variable|Non-|PSM Proje|cts|PS<br> (bro|M Project<br>adlydefin|s<br>ed)|PS<br>(narr|M Projec<br>owlydefi|ts<br>ned)|Difference in Means (<br>and non-PSM|broad PSM<br> )|Difference in Me<br>PSM and non|ans (narrow<br>-PSM)|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|||||||||||||Difference in|robust|
||N|Mean|SD|N|Mean|SD|N|Mean|SD|Difference in Means|robust SE|<br>Means|<br>SE|
|Administrative and Civil<br>Service Reform|2,105|0.5|3.1|1,097|9.1|16|178|17|20.5|8.591***|(0.487)|16.513***|(1.538)|
|Decentralization|2,105|0.9|3.9|1,097|4|9.7|178|3.5|9.1|3.020***|(0.305)|2.557***|(0.689)|
|Public Expenditure, Financial||||||||||||||
|Management, and|2,105|0.2|1.7|1,097|4.2|12.1|178|18.2|21.8|4.029***|(0.368)|18.036***|(1.630)|
|Procurement||||||||||||||
|Tax Policy and<br>Administration|2,105|0|0.6|1,097|1.9|9.6|178|8.5|20.9|1.852***|(0.289)|8.465***|(1.559)|
|Total Public Sector (both<br>themes and codes)|2,105|7.1|7.4|1,097|57.4|28.3|178|85.4|23.2|50.360***|(0.870)|78.385***|(1.742)|

**Table A.6 Difference-in-Means Test between PSM and Non-PSM Projects for Project Management Characteristics Observable at Approval/Effectiveness Stage**

|||Non-Public-S<br>|ector Projects<br>||Public S<br>|ector Pro<br>|jects<br>|||
|---|---|---|---|---|---|---|---|---|---|
|Variable|N|Mean|SD|N|Mean|SD|Difference in Means|Robust SE|Missing Observations|
|Committed Amount|2,105|82|96.6|1,097|41.3|64.4|-40.650***|(2.866)|0|
|Lending (~preparation) Costs Total [$ thousand]|1,957|362.7|220.4|1,022|321|219.8|-41.755***|(8.491)|223|
|Days from PCN Review to Approval|2,105|671.4|523.2|1,095|631.6|492.5|-39.743**|(18.747)|2|
|Days from Approval to Effectiveness|2,080|205.6|151.6|1,088|205.2|126.8|-0.369|(5.082)|34|

_Note:_ PCN = project concept note.

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