Table 3.

Inter-partner Agreement on Dates of First and Last Sexual Intercourse

	Inter-partner Agreementa
	First sexual intercourse (N=144)		Last sexual intercourse (N =146)
	N	%	N	%
Same date	8	5.6	48	32.9
Within 7 days	34	23.6	125	85.6
Within 14 days	47	32.6	133	91.1
Within 30 days	62	43.1	138	94.5
To calendar monthb	57	39.6	130	89.0
Within 90 days	90	62.5	144	98.6
Within 180 days	101	70.1	146	100.0
Within 365 days	117	81.3	146	100.0

^aInter-partner agreement compares reported dates of first and last sexual intercourse provided by the index and partner participants in individual interviews.

^bCalendar month represents a subset of agreement to within 30-days where participants agreed to the exact month reported (for example: participants reporting date of first sex in November of the same year).