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. Author manuscript; available in PMC: 2022 Oct 1.
Published in final edited form as: Pediatrics. 2021 Sep 2;148(4):e2020049702. doi: 10.1542/peds.2020-049702

Appendix Table 1. Baseline Balance across Baseline Measures Between High and Low Cash Gift Groups.

Full Sample (n = 1000)

Full Sample (n = 1000)

Low Cash Gift High Cash Gift Std Mean Difference
Mean (sd) N Mean (sd) N Hedges’ g Cox’s Index p-value

Child is female 0.50 600 0.48 400 −0.06 0.458
Child weight at birth (pounds) 7.13 599 7.09 399 −0.04 0.567
(1.08) (1.01)
Child gestational age (weeks) 39.09 596 39.04 399 −0.04 0.512
(1.25) (1.24)
Mother age at birth (years) 26.80 600 27.38 400 0.10 0.113
(5.82) (5.86)
Mother education (years) 11.88 593 11.88 398 −0.00 0.978
(2.83) (2.96)
Mother race/ethnicity: white, non-Hispanic 0.11 600 0.09 400 −0.17 0.128
Mother race/ethnicity: Black, non-Hispanic 0.40 600 0.44 400 0.11 0.091
Mother race/ethnicity: multiple, non-Hispanic 0.04 600 0.03 400 −0.18 0.369
Mother race/ethnicity: other or unknown 0.05 600 0.03 400 −0.37 0.066
Mother race/ethnicity: Hispanic 0.41 600 0.41 400 0.01 0.594
Mother marital status: never married 0.42 600 0.49 400 0.18 0.024
Mother marital status: single, living with partner 0.26 600 0.22 400 −0.14 0.119
Mother marital status: married 0.21 600 0.21 400 0.02 0.791
Mother marital status: divorced/separated 0.05 600 0.03 400 −0.37 0.064
Mother marital status: other or unknown 0.06 600 0.04 400 −0.18 0.400
Mother health is good or better 0.88 600 0.92 400 0.25 0.041
Mother depression (CESD) 0.68 600 0.69 400 0.02 0.805
(0.45) (0.46)
Cigarettes per week during pregnancy 5.05 595 3.45 397 −0.09 0.111
(21.17) (11.76)
Alcohol drinks per week during pregnancy 0.17 598 0.03 399 −0.11 0.052
(1.63) (0.39)
Number of children born to mother 2.40 600 2.53 400 0.09 0.146
(1.38) (1.41)
Number of adults in household 2.12 600 2.03 400 −0.09 0.156
(1.00) (0.96)
Biological father lives in household 0.40 600 0.35 400 −0.12 0.154
Household combined income 22,466 562 20,918 370 −0 0.219
(21,360) (16,146)
Household income unknown 0.06 600 0.07 400 0.14 0.482
Household net worth −1,981 531 −3,308 358 −0 0.423
(28,640) (20,323)
Household net worth unknown 0.12 600 0.10 400 −0.09 0.644

Joint Test: Chi2(30)= 34.02, p-value= 0.238, n=1000.

Notes: P-values were derived from a series of OLS bivariate regressions in which each respective baseline characteristic was regressed on the treatment status indicator using robust standard errors and site-level fixed effects. The bivariate regressions were also run without site-level fixed effects, and the p-values differed on average by 0.011. The p-values without fixed effects do not appear in the table. The joint test of orthogonality was conducted using a probit model with robust standard errors and site-level fixed effects.

Standardized mean differences were calculated using Hedges’ g for continuous variables and Cox’s Index for dichotomous variables.

If there were more than 10 missing cases for a covariate, missing data dummies were included in the table and the joint test. If fewer than 10 cases were missing, missing data dummies were not included in the table but were included in the joint test.

Chi-square tests of independence were conducted for the two categorical variables: mother race/ethnicity and mother marital status. For both tests, p>0.05