Examination of the Relationship between Psychosocial Mediators and Intervention Effects in It’s Your Game: An Effective HIV/STI/Pregnancy Prevention Intervention for Middle School Students
Table 3
Mediation of effects of intervention on initiation of sex.
Program's effect on the
Mediator's effect on
Program's effect on the outcome
Estimate of mediated
mediator
the outcome
adjusting for the mediator
effect (Sobel test)
Proportion of effect
(SE)
value
(SE)
value
(SE)
value
(SE)
value
that is mediated
Behavioral knowledge
STI signs and symptoms**
0.03
0.01
0.000
0.19
0.04
0.000
−0.14
0.08
0.068
0.005
0.002
0.001
3.6%
HIV/STI knowledge
0.01
0.01
0.069
−0.01
0.03
0.753
−0.11
0.07
0.093
0.000
0.000
0.757
0.1%
Condom knowledge
0.04
0.03
0.087
0.05
0.02
0.032
−0.11
0.07
0.115
0.002
0.002
0.181
1.9%
Perceived self efficacy
Refusal self efficacy*
0.02
0.01
0.028
−0.30
0.04
0.000
−0.10
0.07
0.188
−0.007
0.003
0.034
6.7%
Condom self efficacy
0.01
0.01
0.296
0.26
0.06
0.000
−0.12
0.06
0.061
0.002
0.002
0.311
1.7%
Behavioral and normative beliefs
Sexual beliefs
0.01
0.01
0.579
−0.22
0.04
0.000
−0.12
0.06
0.048
−0.002
0.003
0.581
1.5%
Beliefs about abstinence
0.03
0.02
0.230
−0.35
0.07
0.000
−0.10
0.05
0.066
−0.010
0.008
0.243
9.3%
Perceived friends’ beliefs
0.02
0.02
0.227
−0.32
0.05
0.000
−0.11
0.06
0.072
−0.007
0.006
0.237
6.3%
Perceived friends’ sexual behavior
−0.03
0.02
0.059
0.50
0.06
0.000
−0.09
0.05
0.089
−0.015
0.008
0.064
14.1%
Perceived norms about condoms
0.03
0.01
0.000
−0.01
0.05
0.776
−0.11
0.07
0.119
0.000
0.002
0.776
0.4%
Reasons for having sex
0.01
0.02
0.657
0.19
0.04
0.000
−0.11
0.08
0.143
0.002
0.005
0.658
1.8%
Reasons for not having sex
0.07
0.05
0.232
−0.20
0.06
0.000
−0.10
0.06
0.098
−0.013
0.012
0.258
11.4%
Risky situations
Exposure to risky situations
−0.03
0.02
0.189
0.53
0.03
0.000
−0.09
0.06
0.146
−0.013
0.010
0.191
13.3%
sRegression path coefficients have been standardized.
*Significantly mediated intervention effect .
**Significantly mediated intervention effect .
