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  • Nearest neighbour matching

    Hi all,

    I am writing my MSc. thesis on the issuance effects of green bonds. In order to conduct an event study on the issuance effects i want to match a conventional bond sample to my green bond sample. I want to use the nearest neighbour matching method and use 5 covariates (ESG Score, E score, Leverage, Total assets and Tobin's Q) to match a conventional bond to each green bond in my sample. I have been struggling a lot in stata and was wondering whether anyone could help me with how to use either the nnmatch or the psmatch2 command in stata. I posted a ample of my data below, i created a dummy for bond type, 1= green bond and 0 = conventional bond.

    Thanks in advance!

    ISIN Totalassets ESGSCORE Escore TobinsQ Leverage Bond_Type Bondtype
    AT0000714373 220500 41.39 52.15 .883 -13128.57 Conventional 0
    KYG982391099 13022665 75.5 70.55 1.491 -5594.03 Conventional 0
    AU000000DOW2 3876187 63.46 62.63 5.015 -5472.53 Conventional 0
    INE860A01027 48164000 63.21 77.16 2.247 -3706.22 Conventional 0
    IT0000784196 9924441 58.44 69.42 .14 69.31 Green 1
    CH0466642201 5.936e+08 66.48 73.78 .104 70.03 Green 1
    US49446R1095 2.060e+10 80.91 84.84 1.249 70.07 Green 1

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