Means and Proportion Tests by Year of College, When Hooking Up With a Partner From the Same College

Casual Contraception in Casual Sex
Means and Proportion Tests by Year of College, When Hooking Up With a Partner From the Same College

Table 1. T-Tests for Coitus Samples by Grade, When Hooking Up With a Partner From the Same College
	Women							Men
	Year 1	Year 2	sig	Year 3	sig	Year 4	sig	Year 1	Year 2	sig	Year 3	sig	Year 4	sig

Had Unprotected Casual Sex	0.06	0.10	***	0.11	***	0.13	***	0.05	0.10	***	0.10	***	0.12	***
Year of College
Freshman Year	1.00	0.00		0.00		0.00		1.00	0.00		0.00		0.00
Sophomore Year	0.00	1.00		0.00		0.00		0.00	1.00		0.00		0.00
Junior Year	0.00	0.00		1.00		0.00		0.00	0.00		1.00		0.00
Senior Year	0.00	0.00		0.00		1.00		0.00	0.00		0.00		1.00
Mother's Educational Attainment
Mother Received a High School Education or Less	0.18	0.19	***	0.18	***	0.19	***	0.18	0.19	***	0.17	***	0.18	***
Mother Received Some College Education	0.22	0.23	***	0.24	***	0.23	***	0.22	0.23	***	0.22	***	0.23	***
Mother Received a Bachelor's Degree	0.37	0.35	***	0.36	***	0.29	***	0.35	0.32	***	0.34	***	0.32	***
Mother Received a Graduate Degree	0.23	0.23	***	0.22	***	0.28	***	0.25	0.26	***	0.27	***	0.27	***
Population Density During High School
Rural	0.06	0.08	^**	0.06	***	0.04	^**	0.04	0.07	^**	0.05	***	0.04	***
Small Town	0.29	0.23	***	0.20	***	0.20	***	0.25	0.23	***	0.18	***	0.18	***
Suburban	0.35	0.36	***	0.41	***	0.42	***	0.38	0.36	***	0.36	***	0.40	***
Medium City	0.21	0.21	***	0.21	***	0.23	***	0.24	0.20	^**	0.26	***	0.25	***
Large City	0.10	0.12	***	0.13	***	0.11	***	0.09	0.14	***	0.16	***	0.14	***
Respondent's Race
White	0.79	0.72	***	0.72	***	0.71	***	0.79	0.73	***	0.74	***	0.72	***
Black	0.03	0.05	^**	0.05	***	0.06	***	0.03	0.11	***	0.06	***	0.06	***
Hispanic	0.09	0.11	***	0.10	***	0.08	***	0.10	0.07	^**	0.07	^**	0.10	***
Asian	0.06	0.07	^**	0.07	^**	0.12	***	0.04	0.07	^**	0.09	***	0.09	***
Other Race	0.03	0.05	^**	0.05	***	0.04	***	0.03	0.03	***	0.04	***	0.03	***
Mixed Race	0.14	0.15	***	0.12	***	0.13	***	0.13	0.11	***	0.16	***	0.10	***
Partner's Race
White	0.76	0.72	***	0.70	***	0.69	***	0.81	0.70	***	0.69	***	0.68	***
Black	0.06	0.09	***	0.08	***	0.08	***	0.02	0.05	***	0.04	***	0.04	***
Hispanic	0.06	0.06	***	0.07	***	0.06	***	0.05	0.06	***	0.05	***	0.07	***
Asian	0.03	0.04	^**	0.05	***	0.07	***	0.05	0.09	***	0.10	***	0.13	***
Mixed Race	0.08	0.07	***	0.08	***	0.07	***	0.06	0.09	***	0.09	***	0.07	***
Other or Not Indicated	0.02	0.02	***	0.03	***	0.03	***	0.02	0.01	***	0.03	***	0.02	***
Childhood Religion
Catholic	0.43	0.38	***	0.36	***	0.35	***	0.44	0.42	***	0.37	***	0.34	***
Jewish	0.13	0.08	***	0.10	***	0.08	***	0.13	0.10	***	0.12	***	0.12	***
Other Religion	0.12	0.15	***	0.18	***	0.16	***	0.12	0.12	***	0.14	***	0.11	***
Protestant	0.13	0.15	***	0.17	***	0.17	***	0.12	0.16	***	0.16	^**	0.19	***
None	0.20	0.25	***	0.19	***	0.25	***	0.18	0.20	***	0.21	***	0.23	^**
Immigrant	0.06	0.06	***	0.08	***	0.09	***	0.08	0.07	***	0.10	***	0.10	***
Observations	1647	1076	2723	804	2451	767	2414	730	533	1263	432	1162	412	1142

Table 2. T-Tests for Condom Samples by Grade, When Hooking Up With a Partner From the Same College
	Women							Men
	Year 1	Year 2	sig	Year 3	sig	Year 4	sig	Year 1	Year 2	sig	Year 3	sig	Year 4	sig

Year of College
Freshman Year	1.00	0.00		0.00		0.00		1.00	0.00		0.00		0.00
Sophomore Year	0.00	1.00		0.00		0.00		0.00	1.00		0.00		0.00
Junior Year	0.00	0.00		1.00		0.00		0.00	0.00		1.00		0.00
Senior Year	0.00	0.00		0.00		1.00		0.00	0.00		0.00		1.00
Mother's Educational Attainment
Mother Received a High School Education or Less	0.19	0.25	***	0.18	***	0.21	***	0.23	0.20	***	0.13	***	0.19	***
Mother Received Some College Education	0.22	0.25	***	0.25	***	0.24	***	0.23	0.26	***	0.27	***	0.20	***
Mother Received a Bachelor's Degree	0.37	0.30	***	0.35	***	0.30	***	0.35	0.31	***	0.36	***	0.32	***
Mother Received a Graduate Degree	0.22	0.20	***	0.22	***	0.25	***	0.19	0.22	***	0.25	***	0.28	***
Population Density During High School
Rural	0.07	0.08	***	0.06	***	0.05	***	0.05	0.07	***	0.07	***	0.05	***
Small Town	0.33	0.23	***	0.21	***	0.20	***	0.31	0.23	^**	0.18	***	0.13	***
Suburban	0.26	0.32	***	0.43	***	0.41	***	0.31	0.29	***	0.36	***	0.44	***
Medium City	0.24	0.22	***	0.18	^**	0.23	***	0.21	0.24	***	0.25	***	0.24	***
Large City	0.10	0.15	***	0.11	***	0.12	***	0.12	0.17	***	0.14	***	0.14	***
Respondent's Race
White	0.78	0.69	***	0.77	***	0.72	^**	0.77	0.70	***	0.80	***	0.76	***
Black	0.05	0.08	***	0.04	***	0.04	***	0.06	0.14	***	0.04	***	0.03	***
Hispanic	0.08	0.12	^**	0.07	***	0.09	***	0.10	0.07	***	0.07	***	0.10	***
Asian	0.05	0.06	***	0.06	***	0.11	***	0.04	0.06	***	0.05	***	0.09	***
Other Race	0.03	0.05	***	0.05	***	0.04	***	0.04	0.03	***	0.03	***	0.02	***
Mixed Race	0.16	0.14	***	0.12	***	0.13	***	0.16	0.15	***	0.14	***	0.08	***
Partner's Race
White	0.74	0.68	^**	0.72	***	0.74	***	0.79	0.73	***	0.75	***	0.69	***
Black	0.08	0.11	***	0.09	***	0.08	***	0.02	0.07	***	0.02	***	0.02	***
Hispanic	0.05	0.08	^**	0.06	***	0.04	***	0.04	0.05	***	0.04	***	0.08	***
Asian	0.02	0.04	***	0.04	^**	0.06	***	0.04	0.05	***	0.08	^**	0.14	***
Mixed Race	0.09	0.08	***	0.08	***	0.05	***	0.08	0.08	***	0.08	***	0.07	***
Other or Not Indicated	0.02	0.02	***	0.01	***	0.03	***	0.02	0.01	***	0.04	***	0.01	***
Childhood Religion
Catholic	0.38	0.39	***	0.37	***	0.38	***	0.50	0.43	***	0.38	***	0.37	***
Jewish	0.10	0.07	***	0.12	***	0.06	^**	0.12	0.08	***	0.13	***	0.13	***
Other Religion	0.13	0.15	***	0.19	***	0.16	***	0.14	0.11	***	0.12	***	0.12	***
Protestant	0.14	0.13	***	0.13	***	0.18	***	0.10	0.14	***	0.14	***	0.18	***
None	0.25	0.26	***	0.18	***	0.23	***	0.15	0.23	***	0.23	***	0.19	***
Immigrant	0.05	0.06	***	0.07	***	0.07	***	0.09	0.08	***	0.07	***	0.10	***
Observations	455	318	773	300	755	302	757	224	210	434	169	393	181	405

Table 3. Among Students Where Mother's Education = Mother Received a High School Education or Less: Means for Coitus Samples by Grade, When Hooking Up With a Partner From the Same College
	Women				Men
	Year 1	Year 2	Year 3	Year 4	Year 1	Year 2	Year 3	Year 4

Had Unprotected Casual Sex	0.03	0.11	0.08	0.13	0.03	0.11	0.07	0.11
Year of College
Freshman Year	1.00	0.00	0.00	0.00	1.00	0.00	0.00	0.00
Sophomore Year	0.00	1.00	0.00	0.00	0.00	1.00	0.00	0.00
Junior Year	0.00	0.00	1.00	0.00	0.00	0.00	1.00	0.00
Senior Year	0.00	0.00	0.00	1.00	0.00	0.00	0.00	1.00
Mother's Educational Attainment
Mother Received a High School Education or Less	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00
Mother Received Some College Education	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received a Bachelor's Degree	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received a Graduate Degree	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Population Density During High School
Rural	0.07	0.11	0.09	0.06	0.05	0.10	0.05	0.01
Small Town	0.30	0.23	0.20	0.26	0.29	0.27	0.14	0.23
Suburban	0.23	0.26	0.28	0.37	0.26	0.26	0.35	0.33
Medium City	0.22	0.22	0.27	0.21	0.29	0.20	0.26	0.28
Large City	0.17	0.18	0.15	0.09	0.11	0.17	0.20	0.15
Respondent's Race
White	0.62	0.58	0.56	0.60	0.57	0.50	0.50	0.51
Black	0.03	0.06	0.05	0.05	0.05	0.16	0.08	0.04
Hispanic	0.23	0.21	0.20	0.12	0.25	0.19	0.16	0.23
Asian	0.07	0.09	0.11	0.17	0.08	0.12	0.20	0.19
Other Race	0.07	0.06	0.09	0.05	0.06	0.03	0.05	0.04
Mixed Race	0.16	0.11	0.12	0.09	0.11	0.13	0.18	0.13
Partner's Race
White	0.64	0.59	0.62	0.63	0.65	0.54	0.53	0.64
Black	0.07	0.12	0.07	0.09	0.01	0.08	0.07	0.01
Hispanic	0.14	0.14	0.16	0.09	0.18	0.13	0.08	0.12
Asian	0.05	0.06	0.08	0.10	0.07	0.11	0.16	0.17
Mixed Race	0.06	0.08	0.04	0.06	0.05	0.11	0.12	0.01
Other or Not Indicated	0.03	0.01	0.03	0.02	0.03	0.03	0.04	0.04
Childhood Religion
Catholic	0.58	0.55	0.52	0.48	0.58	0.53	0.47	0.44
Jewish	0.03	0.01	0.02	0.03	0.02	0.03	0.04	0.01
Other Religion	0.11	0.15	0.20	0.21	0.16	0.14	0.16	0.16
Protestant	0.08	0.11	0.11	0.12	0.11	0.11	0.20	0.08
None	0.20	0.19	0.14	0.17	0.12	0.19	0.12	0.31
Immigrant	0.07	0.08	0.09	0.12	0.12	0.11	0.12	0.23
Observations	291	205	142	149	130	100	74	75

Table 4. Among Students Where Mother's Education = Mother Received Some College Education: Means for Coitus Samples by Grade, When Hooking Up With a Partner From the Same College
	Women				Men
	Year 1	Year 2	Year 3	Year 4	Year 1	Year 2	Year 3	Year 4

Had Unprotected Casual Sex	0.05	0.11	0.09	0.14	0.07	0.10	0.11	0.12
Year of College
Freshman Year	1.00	0.00	0.00	0.00	1.00	0.00	0.00	0.00
Sophomore Year	0.00	1.00	0.00	0.00	0.00	1.00	0.00	0.00
Junior Year	0.00	0.00	1.00	0.00	0.00	0.00	1.00	0.00
Senior Year	0.00	0.00	0.00	1.00	0.00	0.00	0.00	1.00
Mother's Educational Attainment
Mother Received a High School Education or Less	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received Some College Education	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00
Mother Received a Bachelor's Degree	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received a Graduate Degree	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Population Density During High School
Rural	0.08	0.12	0.05	0.06	0.04	0.04	0.06	0.02
Small Town	0.31	0.23	0.21	0.21	0.27	0.19	0.19	0.26
Suburban	0.30	0.35	0.37	0.41	0.33	0.39	0.36	0.31
Medium City	0.24	0.23	0.24	0.22	0.27	0.23	0.32	0.32
Large City	0.06	0.08	0.13	0.11	0.09	0.16	0.07	0.10
Respondent's Race
White	0.74	0.70	0.68	0.68	0.74	0.68	0.81	0.76
Black	0.06	0.05	0.10	0.09	0.04	0.14	0.02	0.09
Hispanic	0.12	0.13	0.12	0.10	0.10	0.06	0.05	0.11
Asian	0.04	0.07	0.05	0.10	0.07	0.06	0.06	0.02
Other Race	0.04	0.05	0.05	0.04	0.05	0.06	0.05	0.03
Mixed Race	0.19	0.20	0.14	0.18	0.18	0.14	0.12	0.11
Partner's Race
White	0.71	0.73	0.67	0.59	0.82	0.72	0.76	0.71
Black	0.07	0.10	0.10	0.13	0.04	0.04	0.02	0.09
Hispanic	0.08	0.06	0.07	0.06	0.04	0.06	0.05	0.07
Asian	0.02	0.03	0.05	0.07	0.04	0.08	0.08	0.09
Mixed Race	0.10	0.07	0.08	0.11	0.06	0.07	0.06	0.04
Other or Not Indicated	0.03	0.02	0.03	0.04	0.00	0.03	0.02	0.00
Childhood Religion
Catholic	0.52	0.44	0.39	0.35	0.49	0.40	0.41	0.39
Jewish	0.06	0.03	0.06	0.03	0.06	0.08	0.11	0.09
Other Religion	0.12	0.18	0.20	0.17	0.15	0.19	0.14	0.11
Protestant	0.11	0.14	0.16	0.16	0.12	0.15	0.09	0.23
None	0.19	0.21	0.19	0.28	0.17	0.18	0.24	0.18
Immigrant	0.04	0.04	0.05	0.08	0.09	0.04	0.07	0.11
Observations	357	245	193	176	164	124	97	94

Table 5. Among Students Where Mother's Education = Mother Received a Bachelor's Degree: Means for Coitus Samples by Grade, When Hooking Up With a Partner From the Same College
	Women				Men
	Year 1	Year 2	Year 3	Year 4	Year 1	Year 2	Year 3	Year 4

Had Unprotected Casual Sex	0.07	0.08	0.13	0.14	0.04	0.10	0.12	0.12
Year of College
Freshman Year	1.00	0.00	0.00	0.00	1.00	0.00	0.00	0.00
Sophomore Year	0.00	1.00	0.00	0.00	0.00	1.00	0.00	0.00
Junior Year	0.00	0.00	1.00	0.00	0.00	0.00	1.00	0.00
Senior Year	0.00	0.00	0.00	1.00	0.00	0.00	0.00	1.00
Mother's Educational Attainment
Mother Received a High School Education or Less	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received Some College Education	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received a Bachelor's Degree	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00
Mother Received a Graduate Degree	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Population Density During High School
Rural	0.05	0.06	0.05	0.04	0.04	0.06	0.06	0.08
Small Town	0.31	0.24	0.21	0.18	0.26	0.29	0.17	0.12
Suburban	0.38	0.41	0.51	0.37	0.41	0.35	0.39	0.46
Medium City	0.19	0.20	0.15	0.29	0.23	0.15	0.19	0.23
Large City	0.07	0.10	0.08	0.13	0.06	0.14	0.19	0.10
Respondent's Race
White	0.83	0.77	0.77	0.75	0.85	0.82	0.76	0.75
Black	0.03	0.04	0.03	0.06	0.04	0.06	0.07	0.05
Hispanic	0.06	0.08	0.08	0.07	0.06	0.04	0.06	0.07
Asian	0.06	0.06	0.08	0.09	0.04	0.05	0.08	0.12
Other Race	0.02	0.06	0.03	0.04	0.02	0.02	0.03	0.02
Mixed Race	0.12	0.15	0.09	0.12	0.15	0.09	0.18	0.11
Partner's Race
White	0.79	0.75	0.74	0.73	0.86	0.72	0.70	0.70
Black	0.05	0.07	0.06	0.08	0.01	0.06	0.02	0.02
Hispanic	0.03	0.04	0.03	0.06	0.02	0.04	0.03	0.05
Asian	0.04	0.04	0.06	0.05	0.03	0.08	0.11	0.11
Mixed Race	0.07	0.07	0.09	0.04	0.06	0.11	0.11	0.12
Other or Not Indicated	0.02	0.03	0.03	0.04	0.02	0.00	0.03	0.02
Childhood Religion
Catholic	0.38	0.32	0.36	0.36	0.43	0.41	0.34	0.27
Jewish	0.15	0.09	0.13	0.07	0.15	0.12	0.17	0.17
Other Religion	0.12	0.14	0.18	0.17	0.09	0.10	0.13	0.08
Protestant	0.16	0.15	0.16	0.17	0.14	0.14	0.14	0.21
None	0.18	0.29	0.18	0.23	0.20	0.23	0.21	0.27
Immigrant	0.06	0.06	0.09	0.09	0.06	0.07	0.10	0.07
Observations	613	381	289	226	252	170	145	130

Table 6. Among Students Where Mother's Education = Mother Received a Graduate Degree: Means for Coitus Samples by Grade, When Hooking Up With a Partner From the Same College
	Women				Men
	Year 1	Year 2	Year 3	Year 4	Year 1	Year 2	Year 3	Year 4

Had Unprotected Casual Sex	0.08	0.09	0.12	0.10	0.07	0.08	0.09	0.14
Year of College
Freshman Year	1.00	0.00	0.00	0.00	1.00	0.00	0.00	0.00
Sophomore Year	0.00	1.00	0.00	0.00	0.00	1.00	0.00	0.00
Junior Year	0.00	0.00	1.00	0.00	0.00	0.00	1.00	0.00
Senior Year	0.00	0.00	0.00	1.00	0.00	0.00	0.00	1.00
Mother's Educational Attainment
Mother Received a High School Education or Less	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received Some College Education	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received a Bachelor's Degree	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received a Graduate Degree	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00
Population Density During High School
Rural	0.04	0.04	0.05	0.03	0.04	0.07	0.02	0.03
Small Town	0.22	0.20	0.18	0.16	0.20	0.17	0.22	0.14
Suburban	0.43	0.38	0.39	0.51	0.46	0.43	0.32	0.43
Medium City	0.20	0.22	0.20	0.19	0.20	0.22	0.29	0.19
Large City	0.12	0.16	0.18	0.12	0.11	0.11	0.15	0.21
Respondent's Race
White	0.89	0.80	0.81	0.76	0.91	0.83	0.80	0.79
Black	0.02	0.03	0.04	0.04	0.02	0.09	0.09	0.07
Hispanic	0.01	0.06	0.03	0.05	0.05	0.02	0.03	0.05
Asian	0.05	0.09	0.06	0.13	0.01	0.05	0.06	0.06
Other Race	0.03	0.02	0.06	0.02	0.02	0.01	0.02	0.03
Mixed Race	0.10	0.13	0.13	0.12	0.09	0.10	0.14	0.07
Partner's Race
White	0.83	0.76	0.73	0.76	0.83	0.76	0.71	0.66
Black	0.05	0.08	0.08	0.04	0.01	0.04	0.05	0.04
Hispanic	0.03	0.03	0.06	0.04	0.01	0.04	0.04	0.05
Asian	0.01	0.04	0.01	0.07	0.08	0.12	0.08	0.15
Mixed Race	0.08	0.08	0.09	0.08	0.05	0.05	0.09	0.07
Other or Not Indicated	0.01	0.01	0.03	0.01	0.03	0.00	0.03	0.03
Childhood Religion
Catholic	0.28	0.27	0.22	0.24	0.30	0.38	0.31	0.32
Jewish	0.20	0.15	0.17	0.15	0.24	0.16	0.10	0.18
Other Religion	0.14	0.13	0.14	0.12	0.11	0.06	0.13	0.11
Protestant	0.14	0.18	0.23	0.19	0.12	0.22	0.21	0.21
None	0.23	0.27	0.24	0.30	0.22	0.19	0.25	0.19
Immigrant	0.06	0.07	0.07	0.08	0.07	0.06	0.09	0.06
Observations	386	245	180	216	184	139	116	113

Table 7. Among Students Where Mother's Education = Mother Received a High School Education or Less: Means for Condom Samples by Grade, When Hooking Up With a Partner From the Same College
	Women				Men
	Year 1	Year 2	Year 3	Year 4	Year 1	Year 2	Year 3	Year 4

Year of College
Freshman Year	1.00	0.00	0.00	0.00	1.00	0.00	0.00	0.00
Sophomore Year	0.00	1.00	0.00	0.00	0.00	1.00	0.00	0.00
Junior Year	0.00	0.00	1.00	0.00	0.00	0.00	1.00	0.00
Senior Year	0.00	0.00	0.00	1.00	0.00	0.00	0.00	1.00
Mother's Educational Attainment
Mother Received a High School Education or Less	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00
Mother Received Some College Education	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received a Bachelor's Degree	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received a Graduate Degree	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Population Density During High School
Rural	0.14	0.10	0.09	0.08	0.04	0.07	0.05	0.00
Small Town	0.31	0.21	0.26	0.23	0.35	0.26	0.14	0.14
Suburban	0.11	0.23	0.30	0.40	0.24	0.30	0.36	0.34
Medium City	0.27	0.23	0.17	0.23	0.22	0.21	0.18	0.29
Large City	0.18	0.23	0.19	0.06	0.16	0.16	0.27	0.23
Respondent's Race
White	0.64	0.55	0.65	0.66	0.59	0.58	0.59	0.54
Black	0.05	0.12	0.04	0.05	0.10	0.16	0.00	0.00
Hispanic	0.19	0.21	0.15	0.13	0.18	0.12	0.18	0.20
Asian	0.04	0.10	0.09	0.11	0.02	0.12	0.18	0.20
Other Race	0.09	0.03	0.07	0.05	0.12	0.02	0.05	0.06
Mixed Race	0.19	0.10	0.09	0.11	0.14	0.07	0.09	0.11
Partner's Race
White	0.61	0.55	0.67	0.68	0.71	0.58	0.68	0.66
Black	0.14	0.12	0.07	0.08	0.00	0.12	0.00	0.03
Hispanic	0.14	0.17	0.11	0.08	0.16	0.07	0.05	0.11
Asian	0.02	0.05	0.06	0.08	0.08	0.12	0.18	0.17
Mixed Race	0.06	0.08	0.07	0.06	0.02	0.09	0.05	0.00
Other or Not Indicated	0.02	0.04	0.02	0.02	0.04	0.02	0.05	0.03
Childhood Religion
Catholic	0.47	0.51	0.48	0.53	0.59	0.47	0.41	0.54
Jewish	0.00	0.01	0.02	0.02	0.02	0.00	0.05	0.00
Other Religion	0.12	0.18	0.28	0.16	0.14	0.14	0.18	0.17
Protestant	0.14	0.13	0.04	0.13	0.10	0.14	0.18	0.03
None	0.27	0.17	0.19	0.16	0.16	0.26	0.18	0.26
Immigrant	0.06	0.06	0.09	0.10	0.16	0.07	0.05	0.23
Observations	85	78	54	62	51	43	22	35

Table 8. Among Students Where Mother's Education = Mother Received Some College Education: Means for Condom Samples by Grade, When Hooking Up With a Partner From the Same College
	Women				Men
	Year 1	Year 2	Year 3	Year 4	Year 1	Year 2	Year 3	Year 4

Year of College
Freshman Year	1.00	0.00	0.00	0.00	1.00	0.00	0.00	0.00
Sophomore Year	0.00	1.00	0.00	0.00	0.00	1.00	0.00	0.00
Junior Year	0.00	0.00	1.00	0.00	0.00	0.00	1.00	0.00
Senior Year	0.00	0.00	0.00	1.00	0.00	0.00	0.00	1.00
Mother's Educational Attainment
Mother Received a High School Education or Less	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received Some College Education	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00
Mother Received a Bachelor's Degree	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received a Graduate Degree	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Population Density During High School
Rural	0.07	0.12	0.05	0.05	0.06	0.07	0.07	0.05
Small Town	0.34	0.22	0.24	0.11	0.37	0.13	0.18	0.19
Suburban	0.24	0.36	0.38	0.44	0.31	0.35	0.36	0.27
Medium City	0.27	0.22	0.24	0.26	0.14	0.29	0.33	0.41
Large City	0.09	0.07	0.08	0.14	0.12	0.16	0.07	0.08
Respondent's Race
White	0.73	0.69	0.76	0.70	0.73	0.64	0.84	0.76
Black	0.11	0.07	0.09	0.10	0.08	0.18	0.02	0.03
Hispanic	0.10	0.10	0.05	0.07	0.14	0.05	0.04	0.16
Asian	0.03	0.05	0.01	0.08	0.06	0.05	0.02	0.00
Other Race	0.03	0.09	0.08	0.05	0.00	0.07	0.07	0.05
Mixed Race	0.24	0.17	0.15	0.11	0.25	0.22	0.16	0.08
Partner's Race
White	0.65	0.73	0.76	0.63	0.78	0.78	0.78	0.70
Black	0.13	0.12	0.12	0.16	0.08	0.04	0.00	0.03
Hispanic	0.07	0.06	0.08	0.04	0.00	0.04	0.02	0.08
Asian	0.01	0.01	0.00	0.04	0.02	0.02	0.07	0.14
Mixed Race	0.11	0.07	0.04	0.05	0.12	0.09	0.11	0.05
Other or Not Indicated	0.03	0.00	0.00	0.07	0.00	0.04	0.02	0.00
Childhood Religion
Catholic	0.45	0.46	0.32	0.32	0.53	0.36	0.29	0.43
Jewish	0.05	0.05	0.09	0.03	0.10	0.09	0.13	0.11
Other Religion	0.14	0.19	0.24	0.18	0.12	0.16	0.16	0.08
Protestant	0.14	0.10	0.14	0.21	0.14	0.15	0.13	0.24
None	0.23	0.21	0.20	0.27	0.12	0.24	0.29	0.14
Immigrant	0.07	0.05	0.05	0.07	0.08	0.04	0.09	0.11
Observations	101	81	74	73	51	55	45	37

Table 9. Among Students Where Mother's Education = Mother Received a Bachelor's Degree: Means for Condom Samples by Grade, When Hooking Up With a Partner From the Same College
	Women				Men
	Year 1	Year 2	Year 3	Year 4	Year 1	Year 2	Year 3	Year 4

Year of College
Freshman Year	1.00	0.00	0.00	0.00	1.00	0.00	0.00	0.00
Sophomore Year	0.00	1.00	0.00	0.00	0.00	1.00	0.00	0.00
Junior Year	0.00	0.00	1.00	0.00	0.00	0.00	1.00	0.00
Senior Year	0.00	0.00	0.00	1.00	0.00	0.00	0.00	1.00
Mother's Educational Attainment
Mother Received a High School Education or Less	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received Some College Education	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received a Bachelor's Degree	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00
Mother Received a Graduate Degree	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Population Density During High School
Rural	0.08	0.03	0.04	0.01	0.06	0.05	0.10	0.09
Small Town	0.35	0.32	0.17	0.29	0.30	0.35	0.12	0.14
Suburban	0.29	0.34	0.54	0.35	0.30	0.21	0.43	0.53
Medium City	0.22	0.18	0.17	0.25	0.23	0.17	0.22	0.19
Large City	0.07	0.14	0.08	0.10	0.10	0.23	0.13	0.05
Respondent's Race
White	0.83	0.75	0.80	0.75	0.82	0.82	0.87	0.83
Black	0.02	0.04	0.02	0.03	0.05	0.09	0.05	0.02
Hispanic	0.04	0.11	0.07	0.07	0.05	0.05	0.05	0.07
Asian	0.09	0.05	0.08	0.12	0.05	0.03	0.02	0.09
Other Race	0.02	0.05	0.04	0.03	0.03	0.02	0.02	0.00
Mixed Race	0.11	0.14	0.09	0.14	0.16	0.11	0.15	0.07
Partner's Race
White	0.80	0.73	0.72	0.82	0.85	0.77	0.68	0.67
Black	0.05	0.06	0.09	0.05	0.01	0.06	0.03	0.02
Hispanic	0.02	0.03	0.04	0.02	0.03	0.05	0.07	0.05
Asian	0.03	0.05	0.08	0.05	0.03	0.03	0.08	0.10
Mixed Race	0.09	0.09	0.06	0.02	0.08	0.09	0.08	0.16
Other or Not Indicated	0.02	0.03	0.02	0.02	0.01	0.00	0.05	0.00
Childhood Religion
Catholic	0.37	0.34	0.42	0.42	0.56	0.47	0.45	0.26
Jewish	0.12	0.08	0.13	0.03	0.10	0.09	0.18	0.19
Other Religion	0.15	0.09	0.16	0.19	0.10	0.11	0.10	0.10
Protestant	0.14	0.12	0.13	0.18	0.10	0.11	0.10	0.21
None	0.23	0.37	0.15	0.19	0.14	0.23	0.17	0.24
Immigrant	0.04	0.05	0.08	0.08	0.08	0.09	0.03	0.05
Observations	169	95	106	91	79	66	60	58

Table 10. Among Students Where Mother's Education = Mother Received a Graduate Degree: Means for Condom Samples by Grade, When Hooking Up With a Partner From the Same College
	Women				Men
	Year 1	Year 2	Year 3	Year 4	Year 1	Year 2	Year 3	Year 4

Year of College
Freshman Year	1.00	0.00	0.00	0.00	1.00	0.00	0.00	0.00
Sophomore Year	0.00	1.00	0.00	0.00	0.00	1.00	0.00	0.00
Junior Year	0.00	0.00	1.00	0.00	0.00	0.00	1.00	0.00
Senior Year	0.00	0.00	0.00	1.00	0.00	0.00	0.00	1.00
Mother's Educational Attainment
Mother Received a High School Education or Less	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received Some College Education	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received a Bachelor's Degree	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Mother Received a Graduate Degree	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00
Population Density During High School
Rural	0.00	0.06	0.08	0.05	0.05	0.09	0.05	0.04
Small Town	0.29	0.14	0.20	0.14	0.19	0.17	0.29	0.06
Suburban	0.38	0.34	0.44	0.46	0.40	0.30	0.26	0.53
Medium City	0.21	0.27	0.15	0.18	0.23	0.33	0.26	0.14
Large City	0.12	0.19	0.14	0.16	0.14	0.11	0.14	0.24
Respondent's Race
White	0.88	0.80	0.85	0.76	0.93	0.72	0.79	0.82
Black	0.05	0.08	0.03	0.00	0.00	0.15	0.07	0.06
Hispanic	0.03	0.06	0.03	0.09	0.05	0.07	0.07	0.04
Asian	0.04	0.05	0.06	0.13	0.00	0.04	0.07	0.08
Other Race	0.00	0.02	0.03	0.01	0.02	0.02	0.00	0.00
Mixed Race	0.12	0.16	0.14	0.13	0.07	0.22	0.14	0.08
Partner's Race
White	0.83	0.69	0.73	0.80	0.81	0.74	0.83	0.71
Black	0.05	0.14	0.05	0.01	0.00	0.09	0.05	0.02
Hispanic	0.00	0.06	0.05	0.04	0.00	0.07	0.02	0.10
Asian	0.01	0.03	0.02	0.08	0.02	0.07	0.02	0.16
Mixed Race	0.10	0.08	0.15	0.05	0.12	0.04	0.05	0.02
Other or Not Indicated	0.01	0.00	0.02	0.01	0.05	0.00	0.02	0.00
Childhood Religion
Catholic	0.26	0.25	0.26	0.28	0.23	0.41	0.36	0.33
Jewish	0.21	0.16	0.23	0.17	0.28	0.13	0.10	0.18
Other Religion	0.10	0.14	0.12	0.09	0.23	0.04	0.10	0.14
Protestant	0.13	0.17	0.20	0.18	0.07	0.20	0.17	0.22
None	0.30	0.28	0.20	0.28	0.19	0.22	0.29	0.14
Immigrant	0.03	0.08	0.05	0.05	0.05	0.13	0.10	0.06
Observations	100	64	66	76	43	46	42	51