Evaluation of the Australian Wage Subsidy Special Youth ...

217
Table 6.7 Matching results, single nearest neighbour with replacement, within caliper,
weighting the propensity with combined weights for attrition, non-response and design
Match
with
caliper
width
0.001
Match
with
caliper
width
0.005
Match
with
caliper
width
0.01
Match
with
caliper
width
0.02
Match
with
caliper
width
0.05
Difference in employment 150 for 0.08 0.06 0.02 0.02 0.02
matched treated and comparisons
T statistic 1.57 151 1.19 0.14 0.14 0.14
Number of SYETP matched 87 99 102 102 103
Number of comparison which satisfy 80 89 91 91 92
the caliper rule
Number of times used
1 73 80 81 81 82
2 7 8 9 9 9
More than 2 1 1 1 1
Mean difference in propensity score 0.0002 0.0004 0.0005 0.0005 0.0009
between single nearest neighbour
matched treated and comparisons
Standard deviation 0.0002 0.0006 0.0012 0.0012 0.0035
Mean bias 11.04 11.85 11.73 11.73 11.84
Common support – 1 case dropped. Weighting protocol: weight propensity, weight the match using the
treated weight only. The weighted mean bias is calculated using svymean in Stata.
150 Ever employed in 1986 survey.
151 Probability of (0.22) for acceptance of the null hypothesis.