Table 2.
Model type | Data | Coefficient of the treatment variable | Standard Error | t-value | P-value |
---|---|---|---|---|---|
DL1 | Levels | 0.9264*** | 0.2094 | 4.42 | 0.004 |
DL2 | Wave Differences | 0.8449** | 0.3250 | 2.60 | 0.048 |
Note: 2002 data are not used in the model for Wave Differences. Asterisks denote significance as follows:
p-value ≤ 0.01
0.01 < p-value ≤ 0.05
0.05 < p-value ≤ 0.10.