32
Stata Technical Bulletin
STB-57
inflate
|
fem I |
.1097465 |
.2800813 |
0.392 |
0.695 |
-.4392028 |
.6586958 |
|
mar I |
-.3540108 |
.3176103 |
-1.115 |
0.265 |
-.9765156 |
.2684941 |
|
kid5 I |
.2171001 |
.196481 |
1.105 |
0.269 |
-.1679956 |
.6021958 |
|
phd I |
.0012702 |
.1452639 |
0.009 |
0.993 |
-.2834418 |
.2859821 |
|
ment I |
-.134111 |
.0452462 |
-2.964 |
0.003 |
-.2227918 |
-.0454302 |
|
cons I |
-.5770618 |
.5093853 |
-1.133 |
0.257 |
-1.575439 |
.421315 |
Iistcoef makes the interpretation of coefficients explicit.
. Iistcoef fem phd, help
zip (N=915): Factor Change in Expected Count
Observed SD: 1.926069
Count Equation: Factor Change in Expected Count for Those Not Always O
|
— art I |
b |
z |
P>∣z∣ |
e^b |
e^bStdX |
— SDofX |
|
^^ ^^ +” fem I |
-0.20914 |
-3.299 |
0.001 |
0.8113 |
0.9010 |
0.4987 |
|
phd I |
0.10375 |
1.459 |
0.145 |
1.1093 |
1.0503 |
0.4732 |
b = raw coefficient
z = z-score for test of b=0
P>∣z∣ = р-value for z-test
e^b = exp(b) = factor change in expected count for unit increase in X
e^bStdX = exp(b*SD of X) = change in expected count for SD increase in X
SDofX = standard deviation of X
Binary Equation: Factor Change in Odds of Always O
|
— AlwaysO I |
b |
z |
P>∣z∣ |
e^b |
e^bStdX |
— SDofX |
|
^^ ^^ ^^—^^ ^^—+- |
0.10975 |
0.392 |
0.695 |
1.1160 |
1.0563 |
0.4987 |
|
phd I |
-0.35401 |
-1.115 |
0.265 |
0.7019 |
0.8458 |
0.4732 |
b = raw coefficient
z = z-score for test of b=0
P>∣z∣ = р-value for z-test
e^b = exp(b) = factor change in odds for unit increase in X
e^bStdX = exp(b*SD of X) = change in odds for SD increase in X
SDofX = standard deviation of X
Saved Results
When the matrix option is specified, Iistcoef saves in r(.) whichever of the following are computed for a particular
model. Since saving these matrices can noticeably slow execution for mlogit, matrices are only saved when the matrix option
is specified. The row and column labels of matrices describe each coefficient that is included in each of the following matrices
(details on the computation of these coefficients are given in the next section).
|
r(b) |
slope or regression coefficients factor change coefficients ^-standardized factor change coefficients ρ-values for test of regression coefficients percent change coefficients ^-standardized percent change coefficients standard deviations for independent variables in finding x- and fully-standardized coefficients ^-standardized coefficients |
|
r(b.ys) |
o or y*-standardized coefficients ^-values or t-values for regression constant or constants ρ-values or /-values for constant or constants ^-values or /-values for constant or constants a scalar indicating the value specified by the pvalue option |
For zip and zinb, the matrices cons2, cons2_p, cons2_z, b2, b2_p, b2_z, b2_f act, b2_f acts, b2_pct, and b2_pcts provide
corresponding results for the binary equation.