Table 2 Synopsis of studies included in the review
Author | Year of intervention implementation | Country | Type of intervention | Health Outcome | Study design |
|---|---|---|---|---|---|
Almond et al [34] | From 1957 to 1977- from the implementation year in the first state to all US states completed | United States | Conditional cash transfer | Birth weight1 | Natural experiment- fixed effect model |
Baker et al [38] | The reform under study occurred in 1993 | United states | Earned Income Tax Credit | Birth weight1 | Natural experiment- difference in difference and triple differences |
Brownell et al [23] | Benefit was introduced in 2001 | Canada | Unconditional Cash Transfer | Birth weight1,3,4 | Natural experiment—Propensity score matching |
Chung et al [33] | 1982 and 1983 | Alaska | Universal Unconditional Cash transfer | Birth weight1 | Natural experiment- difference in difference |
Leyland et al [22] | From April 2009 to January 2011 | Scotland | Universal Unconditional Cash transfer | Birth weight1 | Natural experiment – Interrupted time-series analysis |
Hamad et al 2015 [29] | From 1986 to 2000 | United States | Earned Income Tax Credit | Birth weight1 | Panel data with Instrumental Variable strategy |
Hamad et al 2016 [30] | From 1986 to 2000 | United States | Earned Income Tax Credit | Child mental health2 | Panel data with Instrumental Variable strategy |
Hoynes et al [31] | 1993 | United States | Earned Income Tax Credit | Birth weight1 Small-for-gestational age3 | Natural experiment- before and after analysis |
Komro et al 2019 [26] | From 1994 to 2013 | United States | Earned Income Tax Credit | Birth weight1 | Natural experiment- difference in difference |
Komro et al 2016 [36] | From 1980 to 2011 | United States | Minimum Wage Salary | Birth weight1 | Natural experiment- difference in difference |
Morris et al [24] | From 1992 to 1995 | Canada | Conditional cash transfer | Child mental health2 | RCT |
Milligan et al [25] | 2001 | Canada | Unconditional cash transfer | Social and motor development Child mental health2 | Natural experiment- difference in difference |
Rosenthal et al [35] | From 1998 to 2001 | United States | Conditional cash transfer | Birth weight1 | Panel data analysis study with Instrumental Variable analysis |
Strully et al [27] | From 1980 to 2002 | United States | Earned Income Tax Credit | Birth weight1 | Natural experiment- difference in difference |
Wehby et aL [37] | From 1989 to 2012 | United States | Minimum Wage Salary | Birth weight1 | Natural experiment- difference in difference |
Wicks Lim et al [32] | From 1997 to 2010 | United States | Earned Income Tax Credit | Birth weight1 | Natural experiment- difference in difference |