Annexe n°1 : TEST DE HAUSMAN
xtreg consult assurance dspc umed prim sec,fe
|
Fixed-effects (within) regression
|
Number of obs
|
=
|
64
|
|
Group variable: rgion
|
Number of groups
|
=
|
32
|
|
R-sq: within = 0.6765
|
Obs per group: min
|
=
|
2
|
|
between = 0.0632
|
avg
|
=
|
2.0
|
|
overall = 0.1097
|
max
|
=
|
2
|
|
F(5,27)
|
=
|
11.29
|
|
corr(u_i, Xb) = -0.4071
|
Prob > F
|
=
|
0.0000
|
---
---
---
consult |
|
Coef.
|
Std. Err.
|
t P>|t|
|
[95% Conf.
|
Interval]
|
|
assurance |
|
15.98919
|
5.573188
|
2.87 0.008
|
4.553954
|
27.42443
|
|
dspc |
|
-.1682786
|
.1255068
|
-1.34 0.191
|
-.4257973
|
.08924
|
|
umed |
|
431.9063
|
119.9296
|
3.60 0.001
|
185.8311
|
677.9816
|
|
prim |
|
30.5651
|
42.02785
|
0.73 0.473
|
-55.66893
|
116.7991
|
|
sec |
|
27.75108
|
71.4089
|
0.39 0.701
|
-118.7679
|
174.27
|
|
_cons |
|
-845.681
|
3166.968
|
-0.27 0.791
|
-7343.762
|
5652.4
|
|
|
|
|
|
|
|
sigma_u |
|
532.75871
|
|
|
|
|
|
sigma_e |
|
161.68311
|
|
|
|
|
|
rho |
|
.91566555
|
(fraction
|
of variance due
|
to u_i)
|
|
---
F test that all u_i=0: F(31, 27) = 10.09 Prob > F = 0.0000
. xtreg consult assurance dspc umed prim sec,fe robust
Fixed-effects (within) regression Number of obs = 64
Group variable: rgion Number of groups = 32
R-sq: within = 0.6765 Obs per group: min = 2
between = 0.0632 avg = 2.0
overall = 0.1097 max = 2
F(5,27) = 8.53
corr(u_i, Xb) = -0.4071 Prob > F = 0.0001
(Std. Err. adjusted for clustering on rgion)
---
Robust
---
---
consult |
|
Coef.
|
Std. Err.
|
t P>|t|
|
[95% Conf.
|
Interval]
|
|
assurance |
|
15.98919
|
5.164432
|
3.10 0.005
|
5.392651
|
26.58573
|
|
dspc |
|
-.1682786
|
.098014
|
-1.72 0.097
|
-.3693867
|
.0328294
|
|
umed |
|
431.9063
|
128.0741
|
3.37 0.002
|
169.1199
|
694.6928
|
|
prim |
|
30.5651
|
37.08958
|
0.82 0.417
|
-45.53643
|
106.6666
|
|
sec |
|
27.75108
|
53.97533
|
0.51 0.611
|
-82.99715
|
138.4993
|
|
_cons |
|
-845.681
|
2621.928
|
-0.32 0.750
|
-6225.432
|
4534.07
|
|
|
|
|
|
|
|
sigma_u |
|
532.75871
|
|
|
|
|
|
sigma_e |
|
161.68311
|
|
|
|
|
|
rho |
|
.91566555
|
(fraction
|
of variance due
|
to u_i)
|
|
. est store eq
|
. xtreg consult assurance dspc umed prim sec,re robust
|
|
|
|
Random-effects
|
GLS regression
|
Number of obs
|
=
|
64
|
|
Group variable:
|
rgion
|
Number of groups
|
=
|
32
|
|
R-sq: within
|
= 0.5560
|
Obs per group: min
|
=
|
2
|
|
between
|
= 0.4323
|
avg
|
=
|
2.0
|
|
overall
|
= 0.3967
|
max
|
=
|
2
|
Random effects u_i ~ Gaussian Wald chi2(6) = 1948.83
corr(u_i, X) = 0 (assumed) Prob > chi2 = 0.0000
(Std. Err. adjusted for clustering on rgion)
Analyse de l'incidence du Seguro Popular et de son impact sur
l'utilisation des services de santé au Mexique
2009
---
Robust
|
consult |
---
|
Coef.
|
Std. Err.
|
z P>|z|
|
[95% Conf.
|
Interval]
|
|
assurance |
|
11.54735
|
6.172064
|
1.87 0.061
|
-.5496717
|
23.64437
|
|
dspc |
|
-.0900533
|
.1791355
|
-0.50 0.615
|
-.4411525
|
.2610459
|
|
umed |
|
227.0546
|
87.31037
|
2.60 0.009
|
55.92944
|
398.1798
|
|
prim |
|
-12.01349
|
20.61897
|
-0.58 0.560
|
-52.42593
|
28.39894
|
|
sec |
|
.6182005
|
25.37969
|
0.02 0.981
|
-49.12508
|
50.36148
|
|
_cons |
|
1969.676
|
1362.65
|
1.45 0.148
|
-701.0697
|
4640.422
|
|
---
|
|
|
|
|
|
|
sigma_u |
|
234.75751
|
|
|
|
|
|
sigma_e |
|
161.68311
|
|
|
|
|
|
rho |
|
.67826932
|
(fraction
|
of variance due
|
to u_i)
|
|
|
. hausman eq
|
|
|
|
|
|
---- Coefficients ----
| (b) (B) (b-B) sqrt(diag(V_b-V_B))
| eq . Difference S.E.
|
---
|
+
|
|
|
|
|
assurance
|
| 15.98919
|
11.54735
|
4.441839
|
.
|
|
dspc
|
| -.1682786
|
-.0900533
|
-.0782253
|
.
|
|
umed
|
| 431.9063
|
227.0546
|
204.8517
|
93.70105
|
|
prim
|
| 30.5651
|
-12.01349
|
42.5786
|
30.8301
|
|
sec
|
| 27.75108
|
.6182005
|
27.13288
|
47.6362
|
b = consistent under Ho and Ha; obtained from
xtreg
B = inconsistent under Ha, efficient under Ho; obtained from
xtreg
Test: Ho: difference in coefficients not systematic
chi2(5) = (b-B)'[(V_b-V_B)^(-1)](b-B)
= 116.77
Prob>chi2 = 0.0000
(V_b-V_B is not positive definite)
| 
