Family Planning Perspectives
Volume 33, Number 2 March/April 2001

Effects of a Parent-Child Communications
Intervention on Young Adolescents'
Risk for Early Onset of Sexual Intercourse

TABLES


Table 1. Percentage of students reporting specific knowledge or behaviors, or mean score (and standard deviation) for dependent variables, at baseline and posttest surveys
Variable Baseline Posttest
Knowledge
Abstinence effectiveness (%) 69.7 86.9****
Pregnancy risk (%) 86.9 91.4
Sexual beliefs and attitudes
Overall beliefs supporting delay 42.3 (6.7) 43.3 (7.4)
Personally support delay 26.6 (4.6) 26.9 (4.9)
Friends/peers support delay 8.5 (2.3) 8.8 (2.4)*
Substance use increases risk-taking 2.1 (1.0) 2.0 (1.0)
Expect sex if had sex before 2.4 (0.9) 2.3 (1.0)
Media encourage adolescent sex 2.9 (1.0) 3.4 (0.9)***
Perceive fewer sexually active peers 1.1 (0.8) 1.1 (0.8)
Self-efficacy for refusal/avoidance
Overall 15.7 (4.1) 16.3 (3.9)
Substance refusal/avoidance 6.4 (1.8) 6.5 (1.8)
Sexual refusal/avoidance 9.4 (2.5) 9.8 (2.4)*
Behavioral intentions
Likely to have sex before finishing H.S. 0.6 (0.6) 0.5 (0.6)**
Likelihood of intercourse (if attracted to an individual) 2.3 (2.2) 2.1 (2.3)
Parent-child communications
Comfort communicating with parents about sex 2.5 (1.1) 2.6 (1.0)*
Frequency of communication about sex†
Overall 6.0 (5.9) 6.5 (6.3)
Puberty/physiological changes 0.7 (0.9) 0.7 (0.9)
Sexual expectations 2.9 (2.8) 3.2 (3.0)
Prevention strategies 1.0 (1.6) 1.3 (1.7)
Consequences of sexual intercourse 1.4 (1.8) 1.4 (1.8)
Frequency of discussions about class activities
Class lessons na 2.2 (1.0)
Homework assignments na 2.1 (1.2)
Sexual opportunities†
No. of potentially sexual situations 1.3 (1.9) 1.3 (1.8)
No. of sexual situations 1.6 (2.2) 1.5 (2.2)
Avoided/refused high-risk or sexual situations‡
Overall 72.4 (44.7) 77.8 (56.9)
Refused potentially sexual situations 74.0 (55.8) 63.9 (49.7)
Refused sexual situations 75.1 (51.7) 86.5 (64.6)
Substance use and sexual behaviors
Lifetime alcohol use 2.0 (1.2) 2.1 (1.5)
Recent alcohol use§ 0.4 (0.9) 0.5 (1.2)
Went further sexually than wanted to‡ 1.5 (0.7) 1.6 (0.6)
Ever had sexual intercourse (%) 5.7 6.4
Recent sexual intercourse (%)† 2.0 4.4
*p<=.05. **p<=.01. ***p<=.001. ****p<=.0001. †In the past three months. ‡Among those in these situations in the past three months. §In the past 30 days. Note: na=not applicable.

back to text


Table 2. Percentage of students reporting specific knowledge or behaviors, or adjusted mean score (and standard error) for dependent variables, by intervention group, posttest survey
Variable MPM-only MPM-enhanced F
Knowledge
Abstinence effectiveness (%) 87.2 (2.6) 84.6 (2.6) ns
Pregnancy risk (%) 91.8 (2.0) 92.9 (2.0) ns
Sexual beliefs and attitudes
Overall beliefs supporting delay 43.5 (0.40) 43.3 (0.37) ns
Personally support delay 26.9 (0.28) 27.1 (0.26) ns
Friends/peers support delay 8.8 (0.15) 9.0 (0.14) ns
Substance use increases risk-taking 2.1 (0.07) 1.9 (0.07) ns
Expect sex if had sex before 2.4 (0.07) 2.2 (0.06) 3.6*
Media encourage adolescent sex 3.4 (0.06) 3.3 (0.06) ns
Perceive fewer sexually active peers 1.1 (0.05) 1.1 (0.05) ns
Self-efficacy for refusal/avoidance
Overall 15.8 (0.24) 16.8 (0.22) 10.3**
Substance refusal/avoidance 6.2 (0.12) 6.8 (0.11) 10.7***
Sexual refusal/avoidance 9.6 (0.15) 10.2 (0.14) 7.5**
Behavioral intentions
Likely to have sex before finishing H.S. 0.5 (0.03) 0.4 (0.03) 8.3**
Likelihood of intercourse (if attracted to an individual) 2.2 (0.12) 1.9 (0.11) ns
Parent-child communications
Comfort communicating with parents about sex 2.6 (0.07) 2.7 (0.06) ns
Frequency of communication about sex†
Overall 5.8 (0.39) 7.2 (0.37) 6.9**
Puberty/physiological changes 0.7 (0.06) 0.7 (0.06) ns
Sexual expectations 3.0 (0.19) 3.4 (0.19) ns
Prevention strategies 1.0 (0.11) 1.6 (0.11) 13.3***
Consequences of sexual intercourse 1.1 (0.11) 1.6 (0.11) 8.0**
Frequency of discussions about class activities
Class lessons 1.8 (0.08) 2.5 (0.08) 29.7****
Homework assignments 1.3 (0.08) 2.9 (0.07) 241.8****
Sexual opportunities†
No. of potentially sexual situations 1.3 (0.11) 1.3 (0.10) ns
No. of sexual situations 1.5 (0.13) 1.5 (0.12) ns
Avoided/refused high-risk or sexual situations‡
Overall 71.6 (4.0) 72.6 (4.3) ns
Refused potentially sexual situations 68.7 (5.4) 76.3 (5.6) ns
Refused sexual situations 73.9 (4.5) 70.4 (5.4) ns
Substance use and sexual behaviors
Lifetime alcohol use 2.2 (0.08) 1.9 (0.08) 5.4*
Recent alcohol use§ 0.6 (0.06) 0.4 (0.06) 4.2*
Went further sexually than wanted to‡ 1.5 (0.22) 1.7 (0.26) ns
Ever had sexual intercourse (%) 7.4 (1.6) 5.1 (1.5) ns
Recent sexual intercourse (%)† 4.5 (1.3) 3.2 (0.11) ns
*p<=.05. **p<=.01. ***p<=.001. ****p<=.0001. †In the past three months. ‡Among those in these situations in the past three months. §In the past 30 days. Note: ns=not significant.

back to text


Table 3. Percentage of students reporting specific knowledge or behaviors, or mean score for dependent variables, by whether any homework activities were completed
Variable All students MPM-only Homework completed Pairwise comparison Overall significance
None Any
(N=351) (N=161) (N=36) (N=154)
Self-efficacy for refusal/avoidance
Overall 16.3 15.8 16.5 17.0 a*** .05
Substance refusal/avoidance 6.5 6.2 6.4 6.9 a*** .001
Sexual refusal/avoidance 9.9 9.6 10.1 10.2 a** .05
Behavioral intentions
Likely to have sex before finishing high school 0.5 0.5 0.3 0.4 a,** b* .01
Parent-child communications
Overall frequency† 6.5 5.8 5.2 7.4 a**, c* .01
Puberty/physiological changes† 0.7 0.7 0.6 0.7 ns
Sexual expectations† 3.2 3.0 2.0 3.6 a*, c** .01
Prevention strategies† 1.3 1.0 1.1 1.6 a*** .001
Consequences of sexual intercourse† 1.4 1.1 1.4 1.6 a** .05
Frequency of discussion about class activities
Class lessons 2.2 1.8 1.4 2.6 a***, c*** .0001
Homework assignments 2.1 1.3 1.5 3.2 a***, c*** .0001
Substance use and sexual behaviors
Lifetime alcohol use 2.0 2.2 2.1 1.8 a** .01
Recent alcohol use‡ 0.5 0.6 0.6 0.4 a** .05
Went further sexually tha wanted to go§ 1.6 1.5 3.1 1.3 b**, c*** .01
Ever had sexual intercourse (%) 6.4 7.0 14.3 4.0 ns
Recent sexual intercourse (%)† 4.4 4.4 14.3 2.0 b*, c** .001
* p<=.05. ** p<=.01. *** p<=.001. **** p<=.0001. †In the past three months. ‡In the past 30 days. §Among adolescents in this situation in the past three months. Notes: The "overall significance" column refers to general tests of differences between groups, whereas the "pairwise comparison" column provides the precise location of differences between groups. a=MPM-only vs. any homework; b=MPM-only vs. did no homework; c=did no homework vs. did any homework. ns=nonsignificant.

back to text


Table 4. Percentage of students reporting specific knowledge or behaviors, or mean score for dependent variables, by number of homework activities completed
Variable All students MPM-only Activities completed Pairwise comparison Overall significance
<=3 >=4
(N=351) (N=161) (N=102) (N=88)
Self-efficacy for refusal/avoidance
Overall 16.3 15.8 16.7 16.9 a***, b** .001
Substance refusal/avoidance 6.5 6.2 6.6 7.0 b*** .001
Sexual refusal/avoidance 9.9 9.6 10.3 10.0 a* .01
Behavioral intentions
Likely to have sex before finishing high school 0.5 0.5 0.4 0.4 b*** .004
Parent-child communications
Overall frequency† 6.5 5.8 6.7 7.4 b* .05
Puberty/physiological changes† 0.7 0.7 0.7 0.7   ns
Sexual expectations† 3.2 3.0 3.2 3.4   ns
Prevention strategies† 1.3 1.0 1.4 1.7 a*, b*** .001
Consequences of sexual intercourse† 1.4 1.1 1.5 1.7 b** .05
Frequency of discussions about class activities
Class lessons 2.2 1.8 2.2 2.7 a**, b***,
c**
.0001
Homework assignments 2.1 1.3 2.4 3.5 a***, b**,
c***
.0001
Substance use and sexual behaviors
Lifetime alcohol use 2.0 2.2 2.0 1.8 b*** .01
Recent alcohol use‡ 0.5 0.6 0.5 0.4   ns
Went further sexually than wanted to go§ 1.6 1.5 2.2 0.8 c** .05
Ever had sexual intercourse (%) 6.4 7.0 7.1 4.6   ns
Recent sexual intercourse (%)† 4.4 4.4 7.1 1.1   ns
* p<=.05. ** p<=.01. *** p<=.001. **** p<=.0001. †In the past three months.‡In the past 30 days. §Among adolescents in this situation in the past three months. Notes: The "overall significance" column refers to general tests of differences between groups, whereas the "pairwise comparison" column provides the precise location of differences between groups. a=MPM-only vs. <=3 homework activities; b=MPM-only vs. >=4 homework activities; c=<=3 vs. >=4 homework activities.

back to text


Table 5. Percentage of students reporting specific knowledge or behaviors, or mean score for dependent variables, by number of homework assignments completed
Variable All students MPM-only No. of assignments completed Pairwise comparison Overall significance
0-1 2-3 4-5
(N=351) (N=161) (N=69) (N=44) (N=77)
Self-efficacy for refusal/avoidance
Overall 16.3 15.8 16.9 16.6 17.0 a*, b** .01
Substance refusal/ avoidance 6.5 6.2 6.7 6.5 7.0 a*, b*** .001
Sexual refusal/ avoidance 9.9 9.6 10.4 10.1 10.0 ns
Behavioral intentions
Likely to have sex before finishing high school 0.5 0.5 0.4 0.4 0.4 b*** .01
Parent-child communications
Overall frequency† 6.5 5.8 6.0 7.6 7.4 b*, c* .05
Puberty/physiological changes† 0.7 0.7 0.7 0.7 0.7 ns
Sexual expectations† 3.2 3.0 2.7 3.8 3.5 ns
Prevention strategies† 1.3 1.0 1.3 1.6 1.7 b***, c* .01
Consequences of sexual intercourse† 1.4 1.1 1.5 1.6 1.6 ns
Frequency of discussions about class activities
Class lessons 2.2 1.8 2.0 2.6 2.7 b***, c***, d**, e*** .0001
Homework assignments 2.1 1.3 2.1 3.0 3.5 a***, b***, c***, d***, e***, f** .0001
Substance use and sexual behaviors
Lifetime alcohol use 2.0 2.2 1.9 2.1 1.8 a*, b** .05
Recent alcohol use‡ 0.5 0.6 0.4 0.6 0.3 ns
Went further sexually than wanted to go§ 1.6 1.5 2.8 1.0 0.9 a**, d**, e*** .01
Ever had sexual intercourse (%) 6.4 7.0 10.6 2.3 3.9 ns
Recent sexual intercourse (%)† 4.4 4.4 10.6 0.0 1.3 d*, e* .05
* p<=.05. ** p<=.01. *** p<=.001. **** p<=.0001. †In the past three months.‡In the past 30 days. §Among adolescents in this situation in the past three months. Notes: The "overall significance" column refers to general tests of differences between groups, whereas the "pairwise comparison" column provides the precise location of differences between groups. a=MPM-only vs. 0-1; b=MPM-only vs. 4-5; c=MPM-only vs. 2-3; d=0-1 vs. 2-3; e=0-1 vs. 4-5; f=2-3 vs. 4-5. ns=nonsignificant.

back to text


© copyright 2001, The Alan Guttmacher Institute.