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Risk in New Sexual Relationships: Trajectories of Protection* Cover

Risk in New Sexual Relationships: Trajectories of Protection*

By: David C. Bell  
Open Access
|Sep 2018

Figures & Tables

Figure 1.

Observed Levels of Protection and Single-Equation Quadratic Prediction Line
Observed Levels of Protection and Single-Equation Quadratic Prediction Line

Figure 2.

Trajectories of Sexual Protection.
Trajectories of Sexual Protection.

Figure 3.

Protection and Retention by Trajectory Group.
Protection and Retention by Trajectory Group.

Summary of Tests of Five Theories of Protection

 Difference (Table 2)Time (Table 3)Protection (Table 3)Duration (Table 4)
Perceived susceptibility
Trust+++/-
Drug use+/-+/-+/-
Secondary partner++++/-
Power inequality

Comparison of Trajectory Groups

 Protection Trajectory
LowHighDecliningU-shaped
Evaluation of four-trajectory model
Size (percent)    9.8 63.2    15.311.6
Protection index mean (SD)    .15 (.19)    .94 (.11)    .80 (.28)    .66 (.33)
PP    .95    .76    .70    .73
OCC185.21.913.020.9

Cox Regression to Predict Relationship Termination

 Low b (SE)High b (SE)Declining b (SE)U-shaped b (SE)Overall b (SE)
Initial predictors
Perc susceptibility  0.225(0.706)  0.021(0.206)-0.967(2.601)-1.188(0.907)  0.031(0.219)
Trust-0.073(0.046)-0.070(0.018)**  0.118(0.248)  0.016(0.108)-0.070(0.019)**
Drug use-0.132(0.525)-0.259(0.132)*-2.048(1.311)  0.586(0.767)-0.329(0.151)*
Secondary partner  0.697(0.307)*  0.213(0.096)*  0.105(1.053)-0.821(0.739)  0.126(0.108)
Power inequality-0.043(0.359)  0.051(0.090)-0.071(0.636)-0.466(0.422)  0.025(0.100)
Time-varying predictors
Perc susceptibility    -0.044(0.047)
Trust    -0.007(0.005)
Drug use    -0.004(0.036)
Secondary partner      0.078(0.024)**
Power inequality    -0.026(0.023)

j_joss-2018-008_tab_006

Wave:12345678910111213Total
Gender
Male5657575756575755535454555155
Female4443434344434345474646454945
Race
Black5558595960615958575959595958
Anglo1612131211111314141412141413
Hispanic2930292929282828292730272628
Age at baseline
18-30119898879798668
31-403331333133292828302622252429
41-503843394039444339394244454341
51 and over1717202220192124242426242722
Employment
Unemployed4951544750565151484755474350
Odd jobs1289151091714221616191614
Part time1012131812131114111510132013
Full time3030242128222121192220212023
Marital status at baseline
Never married3733312929272733332935382932
Married1513131716171714121412141415
Living as married1414171820202016192116131717
Separated1212171314171416141214121414
Divorced1823181715141614151516141716
Widowed45565667788996
Drug use
None1414131214151516171918181616
Mari/alco only1417191916191616211616132017
Hard drugs7169676870656968616566686467
HIV status role
Role 11212121212121212121212121212
Ever Role 24343434343434343434343434343
Always Role 34545454545454545454545454545
HIV status
HIV negative8888909190899190908990919190
HIV positive121210910119101011109910
Sample size202162150144147139150153149149147141138202

Explaining Protection Changes, by Trajectory

Constant trajectoriesLow ProtectionHigh Protection
 Time b (SE)Time2 b (SE)Protection b (SE)Time b (SE)Time2 b (SE)Protection b (SE)
Perc susceptibility .002 (.006).-- .001 (.073)-.001 (.006).-- .010 (.026)
Trust .137 (.059)*.---.006 (.008) .208 (.041).---.004 (.002)*
Drug use-.021 (.008)**.---.131 (.035)**-.000 (.006).--.014 (.014)
Secondary partner-.062 (.022)** .003 (.001)* .239 (.045)**-.011 (.006)+ .---.001 (.011)
Power inequality-.010 (.013).--.007 (.033)-.010 (.007).---.004 (.011)

Sample Characteristics

 All ParticipantsAll Sex PartnersNew Sex Partners
 N%N%N%
Gender
Male11355.948761.624359.0
Female8944.130338.416941.0
Race/ethnicity
Black11155.043054.522053.5
White3316.318022.811227.3
Hispanic5828.717422.17819.0
Other  50.610.2
Age at baseline
18-302411.918122.911327.5
31-406733.228435.914835.9
41-507738.122128.011126.9
51 and over3416.810413.2409.7
Marital status
Single7537.1    
Married5929.2    
Prev married6833.7    
Employment status
Unemployed9848.5    
Odd jobs2411.9    
Part time209.9    
Full time6029.7    
Drug user
No (nonuser)3316.332841.516038.8
Yes (drug user)16983.746258.525261.2
Sex behaviors (inferred sexual orientation)
No sex125.9    
Straight14672.368086.134583.7
Gay or bi4421.811013.96716.3
HIV status
HIV negative17787.670188.736688.8
HIV positive2512.48911.34611.2
Total N202100.0790100.0412100.0
DOI: https://doi.org/10.21307/joss-2018-008 | Journal eISSN: 1529-1227 | Journal ISSN: 2300-0422
Language: English
Page range: 1 - 26
Published on: Sep 27, 2018
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2018 David C. Bell, published by International Network for Social Network Analysis (INSNA)
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.