Biology Reference
In-Depth Information
90% bootstrap confidence intervals for form difference between
Ts65Dn and normal mouse mandibles
Confidence intervals are calculated following methods outlined previ-
ously in this chapter and detailed in Part 2 of this chapter. Once
confidence intervals are estimated, the form difference matrix is writ-
ten as a vector, along with the lower and upper limits of a 90%
confidence interval. Remember that if the confidence interval does not
contain the value 1 (a value of 1 signifying that two forms are the same
for a particular linear distance), then the null hypothesis that the two
forms are similar for that linear distance is rejected. We have marked
the linear distances that do not contain the value 1 within the confi-
dence interval with a “*”. Of the 55 linear distances, 39 of the confidence
intervals do not contain the value 1.0. This allows us to pinpoint those
measures that do not differ between the two samples as well as those
that do. For example, many of the linear distances that have landmark
4 or 5 as endpoints do not differ between the samples.
Confidence intervals for form differences between Ts65Dn
and normal mouse mandibles based on 100 resamples
with α =0.10.
Lower
Upper
Limit
Estimate
Limit
LANDMARK 2 with LANDMARK 1
1.063
1.090
1.111*
LANDMARK 3 with LANDMARK 1
0.767
0.793
0.815*
LANDMARK 3 with LANDMARK 2
1.108
1.147
1.184*
LANDMARK 4 with LANDMARK 1
0.870
0.884
0.894*
LANDMARK 4 with LANDMARK 2
1.093
1.150
1.210*
LANDMARK 4 with LANDMARK 3
0.982
1.021
1.050
LANDMARK 5 with LANDMARK 1
1.111
1.147
1.179*
LANDMARK 5 with LANDMARK 2
1.058
1.102
1.163*
LANDMARK 5 with LANDMARK 3
0.996
1.029
1.072
LANDMARK 5 with LANDMARK 4
1.004
1.032
1.067*
LANDMARK 6 with LANDMARK 1
1.108
1.142
1.163*
LANDMARK 6 with LANDMARK 2
1.027
1.044
1.061*
LANDMARK 6 with LANDMARK 3
1.002
1.018
1.033*
LANDMARK 6 with LANDMARK 4
0.995
1.015
1.034
LANDMARK 6 with LANDMARK 5
0.869
0.988
1.074
LANDMARK 7 with LANDMARK 1
1.099
1.133
1.156*
LANDMARK 7 with LANDMARK 2
1.031
1.051
1.067*
LANDMARK 7 with LANDMARK 3
1.008
1.025
1.038*
LANDMARK 7 with LANDMARK 4
0.999
1.024
1.040
LANDMARK 7 with LANDMARK 5
0.945
1.011
1.063
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