Table 2.

Proportion/mean for measures of intimate relationship dynamics and contraceptive behaviors

	Ever/Never or Mean for Women (n = 720)	Ever/Never or Mean for Relationships (n = 1,557)	Yes/No or Mean for Weeks (n = 15,609)
Contraceptive Use
Used any contraceptive method	.90	.91	.89
Hormonal method use (while using any method)a	.48	.45	.58
Consistency of coital method use
Consistent condom useb	.61	.62	.68
Consistent withdrawalc	.25	.22	.28
Intimate Relationship Dynamics
Intimacy and commitment
Relationship type
Engaged/married	.34	.16	.20
Cohabiting/stayover	.50	.25	.21
Committed dating	.57	.34	.19
Uncommitted dating	.81	.56	.29
Casual	.69	.61	.11
Duration (in years)	—	.98	—
Conflict and power imbalance
Churning (ever broke up and reconciled)	.51	.30	.04
Partner-dominated decision-making	.25	.13	.14
Fighting	.91	.59	.76
Disrespect	.53	.29	.38
Threats/physical assault	.22	.11	.15
Nonmonogamous	.33	.21	.14
Control Variables
Stable partner characteristics
Age difference, in years	—	2.46	—
Partner’s education, in years	—	12.41	—
Education difference
Partner has equal education		.41
Partner has more education	—	.42	—
Partner has less education	—	.17	—
Couple’s childbirth history
Couple has birth together (shared)	—	.12	—
Woman had birth with prior partner	—	.14	—
Partner had prior birth	—	.08	—
Neither has prior birth	—	.67	—

^aAmong the 701 women and 1,481 relationships who reported a hormonal or coital method, and 13,794 weeks with any contraceptive use.

^bAmong the 473 women and 815 relationships that ever used condoms, and 3,523 weeks of condom use.

^cAmong the 370 women and 561 relationships that ever used withdrawal (without condoms), and 2,827 weeks of withdrawal use.