Casual Contraception in Casual Sex
Tables

Table 2. Descriptive Statistics
Hookups Hookups With Sex
WomenMenWomenMen
Year of College
Freshman Year0.350.330.290.28
Sophomore Year0.240.260.230.27
Junior Year0.210.210.240.22
Senior Year0.200.190.250.24
Mother's Educational Attainment
Mother Received a High School Education or Less0.210.190.240.21
Mother Received Some College Education0.240.230.250.24
Mother Received a Bachelor's Degree0.330.320.310.33
Mother Received a Graduate Degree0.220.250.200.22
Population Density During High School
Rural0.060.050.060.06
Small Town0.240.210.260.22
Suburban0.360.370.340.35
Medium City0.220.240.220.24
Large City0.120.130.120.14
Respondent's Race
White0.730.730.740.73
Black0.050.060.060.07
Hispanic0.110.100.100.10
Asian0.070.070.060.06
Other Race0.040.040.040.04
Mixed Race0.130.130.130.13
Partner's Race
White0.700.720.690.73
Black0.080.030.090.04
Hispanic0.080.060.080.06
Asian0.040.080.040.07
Mixed Race0.080.080.080.08
Other or Not Indicated0.020.020.020.02
Childhood Religion
Catholic0.410.410.400.42
Jewish0.090.110.080.10
Other Religion0.160.130.170.13
Protestant0.140.160.130.15
None0.210.200.220.20
Immigrant0.070.090.070.09
Observations7144313125821252
Table 3. Odds Ratios for Equations 1 and 2 (before and after including controls)
Models Estimating the Odds of Coitus Models Estimating the Odds of Condom Use
Equation 1 Equation 2 Equation 1 Equation 2
WomenMenWomenMenWomenMenWomenMen
*** p < .001 ** p < .01 * p < .05 ^ p < .1
Year of College
Freshman Year
Sophomore Year1.15*1.42***1.29***1.53***0.69**0.66*0.68**0.62*
Junior Year1.62***1.38**1.79***1.53***0.72**0.63*0.72**0.63*
Senior Year1.82***1.89***2.09***2.27***0.63***0.62*0.63***0.62*
Mother's Educational Attainment
Mother Received a High School Education or Less
Mother Received Some College Education0.85*0.870.920.90
Mother Received a Bachelor's Degree0.80**0.940.861.03
Mother Received a Graduate Degree0.84*0.73*0.890.80
Population Density During High School
Rural0.981.44*0.900.86
Small Town1.25**1.031.120.90
Suburban
Medium City1.13^1.061.23^0.88
Large City1.32**1.26^1.29^1.37
Respondent's Race
White
Black1.021.050.962.63*
Hispanic0.77**1.001.321.16
Asian0.900.72^0.991.19
Other Race0.811.011.240.97
Mixed Race1.121.181.131.10
Partner's Race
White
Black1.39**0.961.77**0.73
Hispanic0.950.860.940.87
Asian0.890.76^0.821.20
Mixed Race1.25*1.030.911.11
Other or Not Indicated0.68*0.780.681.22
Childhood Religion
Catholic0.84*0.960.921.53*
Jewish0.77*0.901.301.43
Other Religion0.931.090.841.05
Protestant0.79**0.911.241.33
None
Immigrant0.980.971.041.43
Observations71443131714431312582125225821252
Table 4. Odds Ratios for Equation 3
Coitus Condom Use
WomenMenWomenMen
*** p < .001 ** p < .01 * p < .05 ^ p < .1
During/After Freshman Year
First Year of College
Years 2/3/4 of College1.31*1.370.51**0.36*
Mother's Educational Attainment
Mother Received a High School Education or Less
Mother Received Some College Education0.830.720.900.46^
Mother Received a Bachelor's Degree0.880.770.730.74
Mother Received a Graduate Degree0.820.58**0.55*0.35*
Grade × Mother's Educational Attainment
Years 2/3/4 × Some College1.031.311.022.35^
Years 2/3/4 × Bachelor's Degree0.831.311.221.51
Years 2/3/4 × Graduate Degree1.001.401.92*2.94*
School Gender Composition
≤ 53% Female
≥ 53% Female1.141.061.051.21
≥ 53% Female × Years 2/3/41.50***0.971.130.86
Population Density During High School
Rural0.961.42*0.880.87
Small Town1.29***1.021.110.91
Suburban
Medium City1.15*1.051.23^0.89
Large City1.27**1.25^1.29^1.37
Respondent's Race
White
Black1.031.040.982.61*
Hispanic0.76**1.021.311.20
Asian0.910.73^0.991.22
Other Race0.821.011.230.92
Mixed Race1.141.171.131.08
Partner's Race
White
Black1.38**0.951.78**0.74
Hispanic0.980.840.940.84
Asian0.870.780.811.19
Mixed Race1.27*1.010.911.14
Other or Not Indicated0.73^0.770.671.23
Childhood Religion
Catholic0.84*0.950.921.53*
Jewish0.77*0.891.341.49
Other Religion0.911.060.841.08
Protestant0.77**0.901.241.32
None
Immigrant0.990.981.041.41
Observations7144313125821252
Table 5. Selected Odds Ratios for Equation 2-3, Estimated for Events in which the Partner Attended the Respondent's College
Models Estimating the Odds of Coitus Models Estimating the Odds of Condom Use
Equation 2 Equation 3 Equation 2 Equation 3
WomenMenWomenMenWomenMenWomenMen
*** p < .001 ** p < .01 * p < .05 ^ p < .1
Year of College
Freshman Year
Sophomore Year1.121.59***0.56***0.60*
Junior Year1.57***1.64***0.69*0.59^
Senior Year1.74***2.15***0.60**0.51*
During/After Freshman Year
First Year of College
Years 2/3/4 of College1.301.070.26**0.32^
Mother's Educational Attainment
Mother Received a High School Education or Less
Mother Received Some College Education0.910.960.980.670.800.770.580.29^
Mother Received a Bachelor's Degree0.870.970.990.710.63*0.830.37*0.78
Mother Received a Graduate Degree0.870.860.930.51**0.62*0.650.29**0.22*
Grade × Mother's Educational Attainment
Years 2/3/4 × Some College0.891.71^1.453.40^
Years 2/3/4 × Bachelor's Degree0.811.61^1.901.06
Years 2/3/4 × Graduate Degree0.942.15*2.81*3.85^
School Gender Composition
≤ 53% Female
≥ 53% Female0.881.120.862.00
≥ 53% Female × Years 2/3/41.64***1.071.68^0.74
Observations429421074294210713757841375784
Table 6. Selected Odds Ratios for Equation 2-3, Estimated for Events in which the Partner Did Not Attend the Respondent's College
Models Estimating the Odds of Coitus Models Estimating the Odds of Condom Use
Equation 2 Equation 3 Equation 2 Equation 3
WomenMenWomenMenWomenMenWomenMen
*** p < .001 ** p < .01 * p < .05 ^ p < .1
Year of College
Freshman Year
Sophomore Year1.31*1.240.860.68
Junior Year1.68***1.270.820.74
Senior Year2.00***2.31***0.73^0.91
During/After Freshman Year
First Year of College
Years 2/3/4 of College1.321.76^0.800.43
Mother's Educational Attainment
Mother Received a High School Education or Less
Mother Received Some College Education0.78*0.810.66^0.740.940.980.930.74
Mother Received a Bachelor's Degree0.74**0.950.781.070.981.020.960.51
Mother Received a Graduate Degree0.80^0.62*0.770.921.110.740.630.39
Grade × Mother's Educational Attainment
Years 2/3/4 × Some College1.231.041.041.42
Years 2/3/4 × Bachelor's Degree0.910.811.002.48
Years 2/3/4 × Graduate Degree1.040.572.09^2.33
School Gender Composition
≤ 53% Female
≥ 53% Female1.000.971.410.86
≥ 53% Female × Years 2/3/41.39^1.010.741.08
Observations2778967277896711994481199448