Casual Contraception in Casual Sex
Regressions on Assorted Outcomes

Table 1. Odds Ratios for Equations 2 and 3
Coitus Condom Hooked NumHookupPartners NumCoitusPartners
Equation 2 Equation 3 Equation 2 Equation 3 Equation 2 Equation 3 Equation 2 Equation 3 Equation 2 Equation 3
WomenMenWomenMenWomenMenWomenMenWomenMenWomenMenWomenMenWomenMenWomenMenWomenMen
*** p < .001 ** p < .01 * p < .05 ^ p < .1
Year of College
Freshman Year
Sophomore Year1.29***1.53***0.68**0.62*1.69***1.59***1.63***1.72***1.30***1.51***
Junior Year1.79***1.53***0.72**0.63*2.27***1.87***1.96***1.97***1.83***1.86***
Senior Year2.09***2.27***0.63***0.62*2.74***2.31***2.35***2.59***2.22***2.40***
During/After Freshman Year
First Year of College
Years 2/3/4 of College1.31*1.370.51**0.36*2.32***1.60**2.02***2.16***1.63***1.75***
Mother's Educational Attainment
Mother Received a High School Education or Less
Mother Received Some College Education0.85*0.870.830.720.920.900.900.46^1.20**1.121.24*0.981.16***0.981.24***1.071.03^0.96^1.030.90*
Mother Received a Bachelor's Degree0.80**0.940.880.770.861.030.730.741.36***1.081.35***1.011.23***1.011.25***1.17***1.010.89***0.980.88**
Mother Received a Graduate Degree0.84*0.73*0.820.58**0.890.800.55*0.35*1.49***1.19^1.46***1.141.31***0.991.32***1.08^1.10***0.94*1.07*0.91*
Grade × Mother's Educational Attainment
Years 2/3/4 × Some College1.031.311.022.35^0.961.220.92*0.89*1.011.10^
Years 2/3/4 × Bachelor's Degree0.831.311.221.510.981.100.960.81***1.031.01
Years 2/3/4 × Graduate Degree1.001.401.92*2.94*0.981.070.960.88**1.041.08
School Gender Composition
≤ 53% Female
≥ 53% Female1.141.061.051.211.24**0.81^1.23***0.87***0.93***0.90**
≥ 53% Female × Years 2/3/41.50***0.971.130.860.891.141.011.10**1.09***1.02
Population Density During High School
Rural0.981.44*0.961.42*0.900.860.880.870.82*0.930.80**0.930.87***0.89***0.84***0.91**1.05^1.12**1.021.09*
Small Town1.25**1.031.29***1.021.120.901.110.910.88*1.070.86**1.080.90***0.87***0.87***0.89***1.020.981.000.96^
Suburban
Medium City1.13^1.061.15*1.051.23^0.881.23^0.890.81***1.080.81***1.100.88***0.970.88***0.970.96**1.11***0.95**1.11***
Large City1.32**1.26^1.27**1.25^1.29^1.371.29^1.370.80***1.090.78***1.100.86***1.05*0.85***1.06**1.031.18***1.011.19***
Respondent's Race
White
Black1.021.051.031.040.962.63*0.982.61*0.57***1.000.56***1.000.54***0.93**0.55***0.88***0.93**1.48***0.93**1.43***
Hispanic0.77**1.000.76**1.021.321.161.311.200.54***0.75*0.56***0.76*0.61***0.81***0.63***0.79***0.75***0.980.74***1.00
Asian0.900.72^0.910.73^0.991.190.991.220.47***0.34***0.47***0.35***0.56***0.46***0.56***0.46***0.58***0.54***0.58***0.53***
Other Race0.811.010.821.011.240.971.230.920.59***0.70*0.59***0.71*0.75***0.83***0.75***0.83***0.78***0.90*0.77***0.90*
Mixed Race1.121.181.141.171.131.101.131.081.24***1.101.24***1.111.07***1.11***1.08***1.06**1.24***1.18***1.23***1.16***
Partner's Race
White
Black1.39**0.961.38**0.951.77**0.731.78**0.74
Hispanic0.950.860.980.840.940.870.940.84
Asian0.890.76^0.870.780.821.200.811.19
Mixed Race1.25*1.031.27*1.010.911.110.911.14
Other or Not Indicated0.68*0.780.73^0.770.681.220.671.23
Childhood Religion
Catholic0.84*0.960.84*0.950.921.53*0.921.53*1.11^1.25*1.101.21*1.12***1.06***1.11***1.06**0.88***0.970.87***0.94**
Jewish0.77*0.900.77*0.891.301.431.341.491.31**2.03***1.30**1.96***1.46***1.32***1.46***1.32***0.971.09**0.96^1.09**
Other Religion0.931.090.911.060.841.050.841.080.76***0.950.77***0.930.93***0.87***0.94***0.86***0.84***0.86***0.84***0.83***
Protestant0.79**0.910.77**0.901.241.331.241.320.70***1.000.70***1.000.94***0.990.94***0.990.76***0.86***0.77***0.86***
None
Immigrant0.980.970.990.981.041.431.041.410.77***0.940.77***0.930.89***0.91***0.90***0.92**0.92***0.95^0.93**0.96
Observations71443131714431312582125225821252118124980118124980118114979118114979118124978118124978
Table 2. Odds Ratios for Equations 3 and 3j
Coitus Condom Hooked NumHookupPartners NumCoitusPartners
Equation 3 Equation 3j Equation 3 Equation 3j Equation 3 Equation 3j Equation 3 Equation 3j Equation 3 Equation 3j
WomenMenWomenMenWomenMenWomenMenWomenMenWomenMenWomenMenWomenMenWomenMenWomenMen
*** p < .001 ** p < .01 * p < .05 ^ p < .1
During/After Freshman Year
First Year of College
Years 2/3/4 of College1.31*1.371.36*1.290.51**0.36*0.49**0.36*2.32***1.60**2.23***1.79***2.02***2.16***1.98***2.35***1.63***1.75***1.62***1.79***
Mother's Educational Attainment
Mother Received a High School Education or Less
Mother Received Some College Education0.830.720.810.69^0.900.46^0.900.43^1.24*0.981.22*1.011.24***1.071.21***1.08^1.030.90*1.020.90*
Mother Received a Bachelor's Degree0.880.770.880.740.730.740.710.711.35***1.011.32***1.061.25***1.17***1.23***1.20***0.980.88**0.980.89**
Mother Received a Graduate Degree0.820.58**0.820.55**0.55*0.35*0.54*0.34*1.46***1.141.42***1.201.32***1.08^1.30***1.12**1.07*0.91*1.07*0.92^
Grade × Mother's Educational Attainment
Years 2/3/4 × Some College1.031.311.051.391.022.35^1.042.55^0.961.220.971.170.92*0.89*0.94^0.88**1.011.10^1.021.09^
Years 2/3/4 × Bachelor's Degree0.831.310.841.401.221.511.251.590.981.101.001.040.960.81***1.000.81***1.031.011.041.00
Years 2/3/4 × Graduate Degree1.001.401.011.501.92*2.94*1.98*3.08*0.981.071.010.990.960.88**1.030.88*1.041.081.051.06
School Gender Composition
≤ 53% Female
≥ 53% Female1.141.060.851.081.051.211.061.251.24**0.81^1.29***1.22^1.23***0.87***1.28***0.81***0.93***0.90**0.94**0.89***
≥ 53% Female × Years 2/3/41.50***0.971.50***0.951.130.861.120.820.891.140.891.161.011.10**0.95*1.041.09***1.021.10***1.04
Population Density During High School
Rural0.961.42*0.971.43*0.880.870.880.860.80**0.930.80**0.930.84***0.91**0.84***0.90***1.021.09*1.021.09*
Small Town1.29***1.021.27***1.021.110.911.120.910.86**1.080.87**1.070.87***0.89***0.87***0.89***1.000.96^1.000.96^
Suburban
Medium City1.15*1.051.121.061.23^0.891.23^0.890.81***1.100.80***1.090.88***0.970.88***0.990.95**1.11***0.96**1.11***
Large City1.27**1.25^1.27**1.25^1.29^1.371.29^1.350.78***1.100.78***1.100.85***1.06**0.85***1.06**1.011.19***1.011.19***
Respondent's Race
White
Black1.031.041.401.290.982.61*0.972.78e+09***0.56***1.000.54***1.110.55***0.88***0.48***0.910.93**1.43***0.931.32***
Hispanic0.76**1.020.68*0.801.311.200.980.970.56***0.76*0.49***0.920.63***0.79***0.57***0.92^0.74***1.000.69***1.08
Asian0.910.73^1.110.550.991.221.062.000.47***0.35***0.53***0.36***0.56***0.46***0.56***0.46***0.58***0.53***0.55***0.51***
Other Race0.821.010.781.111.230.921.900.590.59***0.71*0.58***0.860.75***0.83***0.58***0.920.77***0.90*0.77***0.85^
Mixed Race1.141.171.211.251.131.081.091.191.24***1.111.26*1.221.08***1.06**1.13***1.13**1.23***1.16***1.36***1.29***
Respondent's Race × Grade
Years 2/3/4 × Black0.660.761.010.001.080.861.20**1.000.971.11
Years 2/3/4 × Hispanic1.151.411.451.281.200.751.17***0.82***1.070.89^
Years 2/3/4 × Asian0.741.430.900.580.860.951.060.991.041.06
Years 2/3/4 × Other Race1.070.870.601.711.020.741.43***0.880.991.09
Years 2/3/4 × Mixed Race0.890.921.050.920.970.840.950.950.86***0.86**
Partner's Race
White
Black1.38**0.951.38**0.941.78**0.741.77**0.70
Hispanic0.980.840.960.830.940.840.930.84
Asian0.870.780.900.770.811.190.821.21
Mixed Race1.27*1.011.26*1.020.911.140.911.13
Other or Not Indicated0.73^0.770.70^0.770.671.230.661.27
Childhood Religion
Catholic0.84*0.950.84*0.950.921.53*0.921.54*1.101.21*1.13*1.21*1.11***1.06**1.09***1.030.87***0.94**0.86***0.94**
Jewish0.77*0.890.76**0.901.341.491.341.501.30**1.96***1.32**1.97***1.46***1.32***1.43***1.29***0.96^1.09**0.95*1.09**
Other Religion0.911.060.931.070.841.080.851.100.77***0.930.78***0.930.94***0.86***0.92***0.84***0.84***0.83***0.83***0.83***
Protestant0.77**0.900.78**0.911.241.321.231.340.70***1.000.71***1.000.94***0.990.94***0.980.77***0.86***0.76***0.86***
None
Immigrant0.990.981.000.971.041.411.041.380.77***0.930.78***0.930.90***0.92**0.90***0.91***0.93**0.960.93**0.96
Observations71443131714431312582125225821252118124980118124980118114979118114979118124978118124978