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. Author manuscript; available in PMC: 2023 Jul 21.
Published in final edited form as: Rev High Ed. 2019 Winter;42(2):385–426. doi: 10.1353/rhe.2019.0001

Table 2.

Comparison of Treatment and Control in Unmatched and Matched Data: Covariate Means

Engagement Experience
Faculty Social Clubs Study Group Clubs
Covariate T C T C T C T C
Logged Income 9.962 10.032 9.989 10.058 9.943 10.054* 9.941 10.022
9.967 9.977 9.991 10.010 9.946 9.956 9.943 9.930
Pell Grant ($1000) 0.834 0.672*** 0.814 0.519*** 0.833 0.648*** 0.922 0.689***
0.828 0.803*** 0.814 0.752*** 0.829 0.808*** 0.919 0.913**
Parent: No College 0.396 0.450*** 0.414 0.478*** 0.397 0.458*** 0.390 0.441**
0.397 0.396** 0.414 0.415*** 0.398 0.400*** 0.391 0.388
Parent: Up to Two Years 0.231 0.227 0.233 0.216 0.228 0.228 0.224 0.229
0.231 0.230 0.233 0.235 0.228 0.229 0.224 0.227
Parent: Up to Four Years 0.065 0.059 0.064 0.054 0.068 0.056* 0.057 0.061
0.065 0.067 0.064 0.063 0.067 0.067 0.057 0.062
Parent: Bachelor’s Degree 0.175 0.162 0.171 0.154 0.180 0.157* 0.190 0.162*
0.175 0.178 0.171 0.170 0.180 0.181* 0.190 0.185
Parent: Advanced Degree 0.133 0.102*** 0.118 0.097* 0.127 0.101** 0.138 0.107**
0.132 0.129** 0.118 0.118* 0.126 0.124* 0.137 0.138
Parents Own Home 0.778 0.754* 0.761 0.762 0.761 0.761 0.787 0.757*
0.779 0.774 0.761 0.764 0.761 0.761 0.788 0.787
Single Parent 0.485 0.567*** 0.527 0.577*** 0.545 0.541 0.412 0.563***
0.486 0.489*** 0.527 0.526*** 0.546 0.545 0.412 0.423***
White 0.622 0.658** 0.650 0.641 0.618 0.666*** 0.624 0.651
0.622 0.628 0.651 0.657 0.619 0.626** 0.624 0.619
Black 0.174 0.152* 0.162 0.152 0.177 0.147** 0.168 0.157
0.174 0.172 0.162 0.160 0.177 0.174 0.168 0.171
Asian 0.044 0.036 0.040 0.035 0.042 0.036 0.071 0.033***
0.044 0.044 0.040 0.040 0.042 0.042 0.071 0.068***
Other Race 0.128 0.122 0.115 0.142** 0.129 0.120 0.110 0.126
0.128 0.126 0.115 0.11** 0.129 0.128 0.110 0.110
Hispanic 0.144 0.150 0.138 0.17** 0.149 0.148 0.136 0.150
0.144 0.143 0.138 0.137** 0.149 0.150 0.135 0.137
Female 0.542 0.585** 0.577 0.563 0.592 0.560* 0.553 0.575
0.542 0.543** 0.577 0.567 0.591 0.591* 0.554 0.552
Age 21.025 22.638*** 21.774 22.984*** 21.822 22.376** 20.174 22.466***
21.032 21.015*** 21.775 21.782*** 21.826 21.897** 20.176 20.348***
Parental Support 0.567 0.469*** 0.530 0.432*** 0.535 0.475*** 0.623 0.479***
0.566 0.563*** 0.529 0.529*** 0.534 0.531*** 0.623 0.618***
Married 0.114 0.187*** 0.149 0.200*** 0.148 0.177** 0.093 0.177***
0.114 0.115*** 0.149 0.146*** 0.148 0.151** 0.093 0.098***
Children 0.126 0.175*** 0.157 0.168 0.155 0.164 0.100 0.170***
0.126 0.128*** 0.157 0.156 0.155 0.156 0.100 0.104**
Financially Dependent 0.702 0.602*** 0.662 0.568*** 0.650 0.620* 0.748 0.614***
0.701 0.699*** 0.662 0.661*** 0.650 0.647* 0.748 0.739***
GED 0.108 0.141*** 0.125 0.147* 0.131 0.132 0.108 0.135*
0.109 0.111** 0.125 0.126* 0.131 0.134 0.108 0.111*
High School GPA 2.859 2.811** 2.840 2.795** 2.862 2.802*** 2.931 2.809***
2.858 2.854* 2.840 2.836* 2.861 2.857** 2.930 2.917***
AP Credit 0.102 0.060*** 0.080 0.057** 0.084 0.065** 0.118 0.065***
0.101 0.096*** 0.080 0.078** 0.083 0.080* 0.118 0.110***
High School Math 2.688 2.453*** 2.574 2.413*** 2.643 2.446*** 2.883 2.467***
2.686 2.678*** 2.574 2.564*** 2.641 2.628*** 2.882 2.837***
Public High School 0.904 0.917 0.910 0.921 0.918 0.910 0.882 0.918***
0.904 0.906 0.910 0.917 0.918 0.918 0.883 0.894**
Live on Campus 0.103 0.040*** 0.069 0.038*** 0.083 0.044*** 0.155 0.044***
0.101 0.095*** 0.069 0.062*** 0.082 0.069*** 0.154 0.145***
Full-Time 0.735 0.637*** 0.706 0.580*** 0.731 0.624*** 0.845 0.639***
0.735 0.728*** 0.706 0.705*** 0.731 0.732*** 0.845 0.833***
Distance Home 24.594 20.247*** 22.279 19.918* 23.376 20.347** 27.387 20.641***
24.594 23.831* 22.221 21.236 23.227 22.005* 27.387 26.933*
Enrollment Size 7886.5 8414.7** 8147.3 8495.3 8241.1 8269.4 7460.4 8380.9***
7895.9 7962.6* 8145.6 8199.3 8229.7 8213.1 7461.8 7677.7**
Percent Minority 30.826 32.368** 31.027 33.799*** 32.439 31.575 30.325 32.155*
30.865 30.977* 31.030 31.262*** 32.407 32.387 30.332 30.878*
Percent Federal Funding 38.924 38.444 38.579 38.601 38.643 38.550 39.514 38.444
38.906 38.771 38.581 38.504 38.641 38.659 39.526 39.460
Undeclared 0.310 0.349** 0.315 0.386*** 0.317 0.350** 0.283 0.346***
0.310 0.341 0.315 0.366** 0.317 0.334 0.283 0.332
Humanities 0.063 0.061 0.066 0.053* 0.060 0.063 0.098 0.056***
0.063 0.068 0.066 0.058 0.060 0.067 0.098 0.061**
Social/Behavioral 0.027 0.027 0.030 0.020* 0.032 0.024 0.036 0.025
0.027 0.029 0.030 0.022 0.031 0.025 0.036 0.029
Life Science 0.024 0.017* 0.020 0.016 0.024 0.016* 0.029 0.018*
0.024 0.019 0.020 0.017 0.024 0.018 0.029 0.024
Physical Science 0.004 0.003 0.004 0.003 0.005 0.002 0.006 0.003
0.004 0.005 0.004 0.004 0.005 0.002 0.006 0.005
Math 0.003 0.002 0.003 0.000 0.002 0.002 0.003 0.002
0.003 0.002 0.003 0.000 0.002 0.002 0.003 0.003
Computer/Information 0.042 0.041 0.041 0.042 0.042 0.040 0.046 0.040
0.042 0.042 0.041 0.043 0.042 0.039 0.046 0.041
Engineering 0.027 0.034 0.030 0.038 0.030 0.034 0.034 0.032
0.027 0.036* 0.030 0.039 0.030 0.034 0.034 0.035
Education 0.068 0.052** 0.064 0.040*** 0.061 0.053 0.073 0.054*
0.068 0.052* 0.064 0.043** 0.061 0.056 0.073 0.053
Business/Management 0.116 0.117 0.116 0.117 0.112 0.119 0.108 0.118
0.116 0.119 0.116 0.118 0.112 0.120 0.108 0.122
Health 0.166 0.167 0.174 0.152* 0.186 0.155** 0.138 0.171*
0.166 0.157 0.174 0.157 0.186 0.164 0.139 0.164
Vocational/Technical 0.044 0.040 0.039 0.046 0.034 0.046* 0.029 0.043
0.043 0.041 0.039 0.044 0.034 0.041 0.029 0.040
Other Professional 0.108 0.089* 0.098 0.087 0.095 0.095 0.116 0.092*
0.108 0.088* 0.098 0.089 0.095 0.095 0.116 0.092*
Hours Worked 19.128 21.535*** 19.911 22.769*** 19.762 21.500*** 17.143 21.388***
19.133 20.408 19.914 21.324 19.783 20.223 17.123 19.009
Job Related to Major 0.111 0.108*** 0.112 0.102 0.109 0.109 0.103 0.110
0.111 0.101 0.112 0.096 0.109 0.105 0.104 0.099
Remedial Courses 1.894 1.782 1.907 1.619*** 1.856 1.789 1.796 1.818
1.896 1.762 1.907 1.669** 1.856 1.850 1.798 1.763
N 2,070 4,940 4,770 2,240 4,260 2,750 940 6,070

Notes: N= 7,010. For each covariate, the table displays the means prior to matching over means after matching.

a

N denotes the pre-matching sample size. A small number of observations were off the common support: Faculty social: 15 cases (10 control, 5 treatment), Faculty Academic: 3 (2 control, 1 treatment), Study Groups: 12 (8 control, 4 treatment), Clubs: 60 (59 control, 1 treatment).

*

p<.05

**

p<.01

***

p<.001