1.Load data

csch <- read.csv("d:/UPWORK-COX/csch.csv")
dim(csch)
## [1] 1000    7
head(csch)
##   X race_white    wkincome p1numpla wkmomed_1 catholic c5r2mtsc_std
## 1 1          1 -0.58432647        2         0        0   -1.1348567
## 2 2          0  0.06801235        1         1        0    0.6970083
## 3 3          0 -0.10415629        5         1        0   -0.3932214
## 4 4          0  1.18582186        3         0        0   -0.7499141
## 5 5          1  0.22493278        3         1        0    0.5998077
## 6 6          0  1.16179262        6         1        0    1.0204348

2.Check outcome

We will then examine the difference of outcome variable and covariants using difference and t-test.

mn <- with(csch, tapply(c5r2mtsc_std, catholic, mean)) mn mn[2] - mn[1]

with(csch, t.test(c5r2mtsc_std ~ catholic)) ```

library(dplyr)
## 
## Attaching package: 'dplyr'
## The following objects are masked from 'package:stats':
## 
##     filter, lag
## The following objects are masked from 'package:base':
## 
##     intersect, setdiff, setequal, union
csch %>% 
    group_by(catholic) %>%
    summarise_each(funs(mean))
## Warning: `summarise_each_()` was deprecated in dplyr 0.7.0.
## Please use `across()` instead.
## Warning: `funs()` was deprecated in dplyr 0.8.0.
## Please use a list of either functions or lambdas: 
## 
##   # Simple named list: 
##   list(mean = mean, median = median)
## 
##   # Auto named with `tibble::lst()`: 
##   tibble::lst(mean, median)
## 
##   # Using lambdas
##   list(~ mean(., trim = .2), ~ median(., na.rm = TRUE))
## # A tibble: 2 x 7
##   catholic     X race_white wkincome p1numpla wkmomed_1 c5r2mtsc_std
##      <int> <dbl>      <dbl>    <dbl>    <dbl>     <dbl>        <dbl>
## 1        0  500.      0.384   0.0436     3.02     0.678      -0.0141
## 2        1  503.      0.360  -0.118      3.11     0.702       0.0455
csch
##         X race_white     wkincome p1numpla wkmomed_1 catholic c5r2mtsc_std
## 1       1          1 -0.584326475        2         0        0 -1.134856722
## 2       2          0  0.068012350        1         1        0  0.697008294
## 3       3          0 -0.104156285        5         1        0 -0.393221365
## 4       4          0  1.185821857        3         0        0 -0.749914093
## 5       5          1  0.224932779        3         1        0  0.599807737
## 6       6          0  1.161792624        6         1        0  1.020434809
## 7       7          1 -0.796917107        2         0        1  0.540556436
## 8       8          0  0.600496477        3         1        1 -0.509539621
## 9       9          0  1.143189141        3         1        1  1.743432079
## 10     10          1  1.475496555        3         0        1  0.693887513
## 11     11          1 -1.268353770        2         0        1  0.520761006
## 12     12          1  0.183263210        7         0        0  1.271697545
## 13     13          0  0.223990593        2         0        0  0.701223289
## 14     14          0 -0.107785908        2         0        0  2.045055739
## 15     15          1 -0.299892343        7         1        0  0.254752674
## 16     16          0 -1.090727103        1         1        0 -0.130383491
## 17     17          1  1.214580107        3         1        1  1.007210767
## 18     18          0  0.063296168        3         1        0  0.433091220
## 19     19          0 -0.227514984        3         0        0 -1.734278817
## 20     20          0 -0.452345926        3         1        0  0.405674716
## 21     21          0  0.818234483        2         1        0  0.494552963
## 22     22          0  1.325294648        3         0        1  2.139872026
## 23     23          0  0.385765505        4         1        0 -0.772575139
## 24     24          1  0.111804158        2         0        1  1.457514343
## 25     25          1  0.321975709        4         0        0 -0.226066808
## 26     26          1 -1.332472042        1         1        0  0.438732232
## 27     27          1 -0.017033979        3         0        0  1.457389465
## 28     28          0  1.432944655        5         1        0  0.463138293
## 29     29          1  0.039531684        1         0        0 -0.014397710
## 30     30          0 -0.197121096        3         1        0 -1.048116075
## 31     31          0 -0.557456266        3         1        0  1.058312427
## 32     32          1 -0.545877439        1         0        0  2.446831559
## 33     33          1 -0.581681037        4         1        0 -0.133718204
## 34     34          1  0.013399533        2         0        1  0.263073344
## 35     35          0  2.134527877        4         0        0  1.249944457
## 36     36          0 -1.903214050        1         1        0  0.046977550
## 37     37          0 -0.255213249        3         1        1  0.481615750
## 38     38          0 -1.839717855        4         0        0 -1.683143392
## 39     39          0 -1.014148733        5         1        1 -1.517638102
## 40     40          1  0.778157295        2         1        1 -0.239844034
## 41     41          0  1.733422235        4         0        0 -0.315649169
## 42     42          0  0.718390060        3         1        0  0.345789404
## 43     43          0  0.824716564        3         1        0  2.357336688
## 44     44          0  1.247590467        4         1        0 -0.634279553
## 45     45          1 -0.572268939        4         0        0 -1.763799254
## 46     46          0 -0.683237189        7         0        0  0.444034130
## 47     47          1 -0.189866452        2         0        0  0.574966695
## 48     48          1  0.510315044        2         1        1  0.098199711
## 49     49          0 -0.169145129        4         0        0  1.739364642
## 50     50          1 -0.229096261        1         1        0  0.139975772
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## 105   105          1 -0.396004456        1         0        0 -0.616797802
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## 847   847          1 -0.309212326        4         1        0 -2.041014190
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## 850   850          0 -0.351256909        3         1        0  1.307549948
## 851   851          0  0.102376234        3         1        0  0.197421081
## 852   852          1  2.083235162        2         1        0  1.076432879
## 853   853          1  0.588484404        2         1        0  0.095266326
## 854   854          1 -1.062463943        2         0        0  0.428482779
## 855   855          0 -0.393690966        1         1        1  0.031347478
## 856   856          0 -0.072112431        3         0        0  0.465210137
## 857   857          0  1.296177120        2         0        0 -0.564469205
## 858   858          0  0.402923417        1         1        0  0.946309789
## 859   859          0  1.363993965        4         1        1  1.022526717
## 860   860          1  0.708726360        4         1        0  1.321246377
## 861   861          0  0.879752704        3         1        0  0.998943501
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## 865   865          0 -1.424155890        2         0        0 -1.188870629
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## 867   867          0  0.150446063        3         1        0 -0.584266317
## 868   868          0  0.633518247        3         0        0  0.975632977
## 869   869          0 -1.421374567        1         1        0 -1.561274776
## 870   870          1  0.353446443        4         0        1 -0.935849848
## 871   871          0  0.014302402        2         1        0 -0.363938998
## 872   872          0  2.189564310        2         1        0 -0.048810540
## 873   873          1 -0.440842649        1         1        0 -2.206954946
## 874   874          0  1.054811268        8         0        0  1.626879285
## 875   875          0 -0.960125056        3         1        0 -0.550405176
## 876   876          1  0.023592257        3         1        0 -0.062739782
## 877   877          1  0.834387623        5         0        0 -0.069931659
## 878   878          0  0.489678235        2         1        1  0.243158789
## 879   879          0  0.258785829        2         1        0  1.777660255
## 880   880          0 -0.160543328        4         1        1 -0.213740099
## 881   881          0  0.733250579        2         0        1 -2.134699134
## 882   882          1  0.744475825        3         1        0  0.955456084
## 883   883          1  0.816658526        4         0        0  1.766857327
## 884   884          0  2.287242349        1         1        1  1.048612719
## 885   885          1 -2.638354902        3         0        0 -0.463543582
## 886   886          0 -0.231120996        4         1        0 -0.298186507
## 887   887          0 -2.023648377        4         0        1  1.395927886
## 888   888          1  0.340624367        3         1        0  0.435934521
## 889   889          1  2.034841939        2         1        1 -0.231830275
## 890   890          0  0.081698110        5         0        0  0.033714010
## 891   891          0  0.848132910        2         1        0 -0.418524888
## 892   892          0  1.838885675        2         1        0 -0.779334177
## 893   893          1 -0.917962162        5         1        0  1.706461319
## 894   894          0 -1.591742494        5         0        0  0.322411062
## 895   895          0 -0.114582669        3         1        0  1.885879663
## 896   896          1  1.763131187        3         1        0 -0.539488788
## 897   897          0  2.275823251        5         1        0 -0.026670586
## 898   898          0  0.529551824        4         1        0 -1.099890754
## 899   899          0  0.664245141        6         0        1 -0.512131758
## 900   900          1  1.886204277        3         1        0 -0.443803724
## 901   901          1 -0.556527444        2         0        0 -0.541164695
## 902   902          1 -0.566725796        1         0        0  0.352298601
## 903   903          0  0.708397820        3         1        1 -1.613452010
## 904   904          0  1.191633281        4         1        1 -0.096974293
## 905   905          1 -2.003904462        4         1        0 -0.380357375
## 906   906          1  0.139851887        3         0        1  0.778515204
## 907   907          1  0.210313333        3         1        0  0.578208027
## 908   908          0  1.139964193        2         1        0  0.122999455
## 909   909          0 -0.759937283        4         0        0  0.169541759
## 910   910          1  0.504114871        1         0        0  0.452054907
## 911   911          1 -0.520387574        3         1        0 -0.763561420
## 912   912          1 -0.320487508        6         0        0  1.106281797
## 913   913          0 -0.599315256        2         0        0 -2.022095478
## 914   914          0 -1.849852401        4         1        0 -2.940426601
## 915   915          0 -1.433025865        3         1        0  1.020783083
## 916   916          0  0.013155987        5         0        0  1.043718508
## 917   917          0  0.431206064        2         1        0 -2.529702476
## 918   918          0 -0.745296946        3         1        0 -1.650002369
## 919   919          1  1.128555379        2         1        0  0.095529652
## 920   920          0  0.449112883        3         1        0 -0.098979441
## 921   921          0 -0.828591098        1         1        0 -0.658036003
## 922   922          1  0.157841492        3         1        0 -1.077667713
## 923   923          0  0.889705111        3         1        0 -0.403348981
## 924   924          0  0.799652918        2         0        1  0.695327263
## 925   925          1  0.657545484        6         1        0 -0.049503643
## 926   926          0  0.493724383        4         1        1 -1.323418667
## 927   927          0  0.227259802        2         1        0  0.213852856
## 928   928          1  0.486567810        1         1        0 -1.298349658
## 929   929          0 -1.480751865        4         0        0  0.068067780
## 930   930          0 -0.986238311        4         1        0  0.896799320
## 931   931          1  0.429888399        2         1        0  1.019187697
## 932   932          1 -1.271502826        2         0        0 -0.108882921
## 933   933          0 -0.476826907        3         1        1 -1.531832114
## 934   934          0  0.956812847        6         1        0  1.007742930
## 935   935          1 -0.565156774        1         1        0 -0.901040797
## 936   936          0  0.550093979        2         1        0 -0.293157716
## 937   937          0 -1.252079198        1         1        0 -0.984932884
## 938   938          0  1.514418557        5         1        1  0.532582914
## 939   939          0 -0.877322368        2         1        0 -0.160362778
## 940   940          0  0.064033918        4         1        0  0.264424803
## 941   941          1 -0.724115691        3         0        0 -0.330596958
## 942   942          0  1.225864007        3         1        0  0.320425798
## 943   943          0 -0.875297898        4         1        1  0.171607631
## 944   944          1 -0.160893867        3         0        0 -1.003531690
## 945   945          0 -1.403511258        2         1        0 -0.325896577
## 946   946          0 -0.125794493        4         0        0  0.096739541
## 947   947          1  0.046902184        3         1        0  0.329006942
## 948   948          1 -0.852348214        2         1        0 -0.211366213
## 949   949          1  0.169663083        5         1        0 -0.723463990
## 950   950          0  0.497705986        3         1        0  0.058840075
## 951   951          0 -0.096600870        2         0        0 -0.846466496
## 952   952          0  0.957650639        3         0        0 -0.366748276
## 953   953          1  0.150799945        2         0        0  1.104275128
## 954   954          0 -0.205032259        3         1        1 -0.238515957
## 955   955          0 -0.147682786        6         1        0 -0.112608205
## 956   956          1 -0.889058201        5         1        0  2.205511821
## 957   957          0 -0.226625388        2         1        1 -1.021963984
## 958   958          1  0.870398819        4         1        0  0.111162749
## 959   959          1  0.625022954        3         0        0  0.002311061
## 960   960          0 -1.262433045        3         1        1  0.979789833
## 961   961          0  1.241612664        5         0        1 -0.327823516
## 962   962          1  1.068524040        2         1        0 -0.330190954
## 963   963          0 -2.267990434        1         1        1  1.101641524
## 964   964          1 -1.490860873        2         1        0 -1.526706427
## 965   965          0  2.183790919        3         0        1  0.124604122
## 966   966          0  1.011746393        3         1        0  1.404720254
## 967   967          0  1.052971775        1         1        0  0.620917777
## 968   968          1 -0.852076283        2         1        0 -0.820277359
## 969   969          0  0.618228846        2         1        0 -0.834044287
## 970   970          0  0.016278455        1         1        1 -0.531408686
## 971   971          0  0.657960251        3         0        0  0.110733493
## 972   972          1  0.992628695        3         1        0 -0.140218454
## 973   973          0 -0.369676138        1         1        1 -0.592687949
## 974   974          1  0.083729004        2         1        0  1.315149360
## 975   975          0  0.556454887        3         0        1 -0.716122817
## 976   976          0 -0.262971751        5         1        1  0.243332090
## 977   977          1  0.711358957        4         0        0  0.920993592
## 978   978          0 -0.677164617        2         1        0  2.217245499
## 979   979          0 -0.014965473        5         1        0  0.259108210
## 980   980          0  0.921135072        4         1        0 -1.978027581
## 981   981          0 -0.942276793        4         1        0  0.298826775
## 982   982          0  0.400862092        3         1        0  0.201307714
## 983   983          0  1.503807254        5         1        0 -2.055787355
## 984   984          0 -1.313372921        6         1        1  0.075032138
## 985   985          0 -1.315811363        2         0        1 -0.151413311
## 986   986          0 -0.552262460        3         0        0  1.244451655
## 987   987          1 -0.756586760        4         0        0  0.874878076
## 988   988          0  0.414577543        3         1        0  1.266400811
## 989   989          0 -0.713393102        3         1        1 -1.300562384
## 990   990          1 -1.800364192        3         0        0 -0.598841549
## 991   991          1  0.075611091        2         0        0  0.191768467
## 992   992          0 -0.901778390        1         0        1 -2.219978642
## 993   993          1 -0.204559767        5         1        0 -1.273930308
## 994   994          0  0.285462296        2         0        0  0.076356918
## 995   995          1  0.553645213        1         1        0 -0.165549633
## 996   996          0 -1.106215846        2         1        0  1.366017491
## 997   997          1  1.418526809        3         1        0  1.273997599
## 998   998          1 -0.926754831        2         0        0  0.033562685
## 999   999          0  1.069002500        1         0        0 -0.089364858
## 1000 1000          1  0.886102455        4         0        0  0.447304147

3.Propensity score estimation

m_ps <- glm(catholic ~ race_white + wkincome + p1numpla + wkmomed_1,
            family=binomial(), data=csch)

library(arm)
## Warning: package 'arm' was built under R version 4.0.5
## Loading required package: MASS
## 
## Attaching package: 'MASS'
## The following object is masked from 'package:dplyr':
## 
##     select
## Loading required package: Matrix
## Loading required package: lme4
## 
## arm (Version 1.11-2, built: 2020-7-27)
## Working directory is D:/UPWORK-COX
display(m_ps, digits = 4)#0o
## glm(formula = catholic ~ race_white + wkincome + p1numpla + wkmomed_1, 
##     family = binomial(), data = csch)
##             coef.est coef.se
## (Intercept) -1.7164   0.2411
## race_white  -0.1052   0.1724
## wkincome    -0.1722   0.0848
## p1numpla     0.0434   0.0576
## wkmomed_1    0.1250   0.1809
## ---
##   n = 1000, k = 5
##   residual deviance = 931.3, null deviance = 936.7 (difference = 5.4)
prs_df <- data.frame( pr_score = predict(m_ps, type = "response"),
                      catholic = csch$catholic )
head(prs_df)
##    pr_score catholic
## 1 0.1632454        0
## 2 0.1736823        0
## 3 0.2047904        0
## 4 0.1430035        0
## 5 0.1672494        0
## 6 0.1778064        0

4. PLOT Probability of going to Catholic school

library(ggplot2)
## Loading required package: ggplot2
levels(prs_df$catholic) <- paste("Actual school type attended:", c("Public", "Catholic"))
p1<- ggplot(prs_df, aes(x = pr_score)) +
        geom_histogram(color = "white") +
        facet_wrap(~catholic) +
        xlab("Probability of going to Catholic school") +
        theme_bw()

p1
## `stat_bin()` using `bins = 30`. Pick better value with `binwidth`.