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Table 3 Test of Balance of the Mean Propensity Score by Blocks

From: Effects of social health insurance on access and utilization of obstetric health services: results from HIV+ pregnant women in Kenya

Panel A: Institutional Delivery Sample

 Block

Insured

Uninsured

P-Value

 Block 1

0.033

0.026

0.0395

 Block 2

0.066

0.062

0.1060

 Block 3

0.090

0.085

0.0305

 Block 4

0.153

0.139

0.0208

 Block 5

0.280

0.269

0.4175

 Block 6

0.457

0.480

0.6198

N = 1137

89

1048

 

Panel B: Skilled Birth Attendant Sample

 Block

Insured

Uninsured

P-Value

 Block 1

0.028

0.025

0.3297

 Block 2

0.073

0.070

0.4539

 Block 3

0.135

0.138

0.5857

 Block 4

0.256

0.250

0.7342

 Block 5

0.462

0.492

0.4877

N = 1017

68

949

 
  1. Note: The above table reports the test of balance of the mean propensity score between the insured and uninsured by blocks. The results are from implementing “pscore.ado” program in Stata. The p-values are based on a two-sample t-test with equal variance. The pscore command fits a logit (probit is the default) model with a starting specification of linear terms without interactions or higher order terms. If balance in not achieved in a block, the sample in the block is split into equally spaced intervals, with higher order terms and interactions included, and the average propensity score of the treated and controls is re-tested until balance is achieved