Table 2: Random effects meta-regression results
|
(1) T-stat |
(2) T-stat |
(3) T-stat | |
|
precision |
0.00443 |
4.276 |
0.366 |
|
(0.009) |
(3.055) |
(0.687) | |
|
no. of explanatory variables |
0.0417*** |
0.0416*** | |
|
(0.001) |
(0.001) | ||
|
N (in logs) |
-0.00369 |
-0.000990 | |
|
(0.016) |
(0.015) | ||
|
no. of years (logs) |
-0.289 |
-0.702 | |
|
(1.056) |
(0.444) | ||
|
no. of countries (logs) |
-0.0613* |
-0.0552* | |
|
(0.028) |
(0.026) | ||
|
annual = 1 |
-4.897 |
1.614** | |
|
(3.858) |
(0.510) | ||
|
published = 1 |
2.326 |
0.00784 | |
|
(3.427) |
(0.023) | ||
|
country effects = 1 |
2.493* |
-0.0776 | |
|
(1.145) |
(0.308) | ||
|
time effects = 1 |
0.0140 |
-0.0267 | |
|
(0.135) |
(0.124) | ||
|
cross section = 1 |
1.311 |
-2.309** | |
|
(17.103) |
(0.864) | ||
|
other preferences included = 1 |
-0.290 |
0.110 | |
|
(15.539) |
(0.163) | ||
|
gravity regression = 1 |
8.338+ |
-0.583** | |
|
(4.250) |
(0.178) | ||
|
robust s.e. = 1 |
-0.143** |
-0.160*** | |
|
(0.046) |
(0.043) | ||
|
product effects = 1 |
-2.893* |
0.0964 | |
|
(1.193) |
(0.125) | ||
|
logged dep. var. = 1 |
-0.211 |
0.244* | |
|
(0.590) |
(0.111) | ||
|
product group = ”All/Total” |
-0.0560 | ||
|
(0.191) | |||
|
product group = ”Apparel & Textiles” |
-0.0584 | ||
|
(0.128) | |||
|
product group = ”Agriculture” |
0.0650 | ||
|
(0.074) | |||
|
regions included = AGOA countries |
-3.870 | ||
|
(15.307) | |||
|
regions included = AGOA + N. Africa |
-8.448 | ||
|
(7.026) | |||
|
definition of dep. var. = Exports |
-0.277 | ||
|
(15.264) | |||
|
definition of dep. var. = Imports |
2.871 | ||
|
(15.228) | |||
|
time frequency = Monthly |
-5.060 | ||
|
(3.842) | |||
|
econometric method = GMM |
-2.620* | ||
|
(1.319) | |||
|
econometric method = Heckman/Tobit |
-8.678** | ||
|
(2.952) | |||
|
level of aggregation = Aggregate |
0.0950 | ||
|
(0.113) | |||
|
level of aggregation = Less Aggregate |
-2.223 | ||
|
(3.424) | |||
|
single country analysis |
1.015** | ||
|
(0.336) | |||
|
Constant |
2.769 |
-0.707* |
-0.392 |
|
(2.135) |
(0.356) |
(0.313) | |
|
Observations τ 2 = 0 constant only model τ 2 estimate LR test of τ 2 = 0 degrees of freedom |
173 730.5 733.9 1.31107e+10 171 |
173 150 |
173 730.5 7.215 320466.4 156 |
Standard errors in parentheses, All explanatory variables are divided by the standard error
+ p < 0.1, * p < 0.05, ** p < 0.01, ∙∙, p < 0.001
12
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