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. 2017 Sep 29;7:34. doi: 10.1186/s13561-017-0169-z

Table 3.

Propensity Score Balance Summary

A. Covariance Balance Summary
Raw Matched
Number of Observations 2905 5088
Treated Observations 2544 2544
Control Observations 361 2544
Variable Name Standardized Differences Variance Ratio
Raw Matched Raw Matched
Mother’s age −.1296483 .0364344 .9287937 1.009999
Child is Twin −.0208939 −.1156947 .8807093 .5463699
Birth Order −.1119146 .0710256 .8888037 1.199043
Male −.0085316 −.0559324 .9982579 1.006856
# ANC Visits .206661 −.1835419 .943477 .5885621
C-Section .0540464 −.0597158 1.135394 .8804142
Birth Interval −.0408154 .1321761 1.135338 .7049418
Facility Delivery .2746749 .0830562 .7614058 .9029657
Distance to Health Facility a Problem −.1786455 .1215717 .8775627 1.140062
Employed −.2450663 −.1205648 1.515683 1.196728
Primary .0234105 −.0090512 1.036952 .9856519
Secondary .2972229 −.180736 1.146584 1.003001
Higher .0924015 −.0616649 1.527182 .7932333
Married −.1246425 .2719016 1.13 .8624613
Living Together .1411103 −.2760325 1.319529 .7002463
Div/Wid/Sep −.1245533 .0329835 .6440925 1.149318
Poor .0742811 −.0427384 1.126954 .939822
Middle .2025143 −.1443748 1.456805 .8293347
Rich .2487801 −.0267813 1.756897 .9556369
Richest −.0371579 .0262596 .926871 1.056912
Urban −.1870417 −.0771981 1.079494 1.024072
Western .1767931 −.1432928 1.761079 .7223761
Central .0278805 −.0476522 1.091104 .8685413
Volta .3894944 .088634 8.038964 1.302943
Eastern .1335153 −.0792723 1.561523 .8110256
Ashanti .3823853 .0773616 9.837706 1.275423
Brong-Ahafo .538495 −.0802844 21.94662 .8581629
Northern −.5721632 .042118 .4612771 1.108165
Upper East .3371211 .1979067 3.502459 1.801891
Upper West −.3843526 −.0066071 .4819179 .9822969
B. Over Identification Test
Over identification test for covariance balance
H0: Covariates are Balanced
Chi2 (31) = 22.0718
Prob > chi 2 = 0.8807