All Academic, Inc. Research Logo

Info/CitationFAQResearchAll Academic Inc.
Document

Deciding to Quit: A Duration Model of Retirement in Congress
Unformatted Document Text:  though the test did not indicate that proportionality was being violated. The results are shown below in Table 2. Table 2 Nonproportional Hazard Diagnostics Variable Rho Chi^2 DF Prob>Chi^2 Age 0.063 0.80 1 0.373 Age Squared -0.080 1.19 1 0.275 Married -0.066 0.66 1 0.416 Number of Children -0.013 0.02 1 0.887 Pension Eligible 0.042 0.27 1 0.605 Nat. Log of % Margin of Victory -0.086 1.19 1 0.275 District Compatibility -0.054 0.52 1 0.469 Redistricting -0.001 0.00 1 0.990 Party Unity -0.015 0.04 1 0.845 Position -0.011 0.02 1 0.895 GLOBAL TEST 5.87 10 0.826 This seems to indicate that proportionality holds. However, the interaction between the time variable and position is significant. It can be interpreted like any other interaction term. A one unit change in the product of the number of years of service and one’s position in the House is associated with an increase in the hazard of retirement of 2%. (exp(0.021) = 1.021). This appears to be a small amount but the range of this variable spans 180 units. When the time is zero the coefficient of the variable position (-.203) represents the impact of ones position. This translates to each unit increase in ones position being related to an 18.4% decrease in the hazard of retirement. (exp(-.203)=. 816). Remember an increase in ones position score is coded as a decrease in the prestige of one’s position in the House. Due to the positive and significant coefficient on the interaction of time and position this effect changes as time increases. Holding position

Authors: Sempolinski, Joseph.
first   previous   Page 24 of 32   next   last



background image
though the test did not indicate that proportionality was being violated. The results are
shown below in Table 2.
Table 2
Nonproportional Hazard Diagnostics
Variable
Rho
Chi^2
DF
Prob>Chi^2
Age
0.063
0.80
1
0.373
Age Squared
-0.080
1.19
1
0.275
Married
-0.066
0.66
1
0.416
Number of Children
-0.013
0.02
1
0.887
Pension Eligible
0.042
0.27
1
0.605
Nat. Log of % Margin of Victory
-0.086
1.19
1
0.275
District Compatibility
-0.054
0.52
1
0.469
Redistricting
-0.001
0.00
1
0.990
Party Unity
-0.015
0.04
1
0.845
Position
-0.011
0.02
1
0.895
GLOBAL TEST
5.87
10
0.826
This seems to indicate that proportionality holds. However, the interaction
between the time variable and position is significant. It can be interpreted like any other
interaction term. A one unit change in the product of the number of years of service and
one’s position in the House is associated with an increase in the hazard of retirement of
2%. (exp(0.021) = 1.021). This appears to be a small amount but the range of this
variable spans 180 units. When the time is zero the coefficient of the variable position
(-.203) represents the impact of ones position. This translates to each unit increase in ones
position being related to an 18.4% decrease in the hazard of retirement. (exp(-.203)=.
816). Remember an increase in ones position score is coded as a decrease in the prestige
of one’s position in the House. Due to the positive and significant coefficient on the
interaction of time and position this effect changes as time increases. Holding position


Convention
All Academic Convention can solve the abstract management needs for any association's annual meeting.
Submission - Custom fields, multiple submission types, tracks, audio visual, multiple upload formats, automatic conversion to pdf.
Review - Peer Review, Bulk reviewer assignment, bulk emails, ranking, z-score statistics, and multiple worksheets!
Reports - Many standard and custom reports generated while you wait. Print programs with participant indexes, event grids, and more!
Scheduling - Flexible and convenient grid scheduling within rooms and buildings. Conflict checking and advanced filtering.
Communication - Bulk email tools to help your administrators send reminders and responses. Use form letters, a message center, and much more!
Management - Search tools, duplicate people management, editing tools, submission transfers, many tools to manage a variety of conference management headaches!
Click here for more information.

first   previous   Page 24 of 32   next   last

©2012 All Academic, Inc.