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Table 3 Estimates in alternative DiD models for the 10YTS

From: Is computer availability at home causally related to reading achievement in grade 4? A longitudinal difference in differences approach to IEA data from 1991 to 2006

Variables C1 C2 C3 C1INT
b se t p b se t p b se t p b se t p
ComputersC −1.20 0.30 −4.04 0.000      −0.670 0.28 −2.39 0.017 −1.13 0.28 −4.08 0.000
BorrowC      0.70 0.08 8.86 0.00 0.480 0.14 3.55 0.000     
Girl              0.19 0.02 12.04 0.000
Language at home              0.42 0.04 10.94 0.000
Books at home              0.16 0.02 10.30 0.000
ComputersC × girl              −0.01 0.05 −0.22 0.826
ComputersC × language              0.19 0.09 2.10 0.036
ComputersC × books              0.00 0.03 −0.06 0.952