Table V.

Differences between women with absent or ineffective vs. effective condom use.

Variable	Levels	Effective condom use		Ineffective condom use		χ2 or t-test
		n = 1134		n = 878
		N or mean	Percentage or SD	N or mean	Percentage or SD
Age		20.3	1.73	20.6	1.7	3.57***
Recruitment source	Passerby/waiting room	406	60.4%	266	39.6	7.59*
	Screener	727	54.29	612	45.7
Mean drinks/week	0	177	64.6%	97	35.4	19.23***
	1–7	729	57.3	544	42.7
	8 or more	222	48.6	235	51.4
Recent binge drinking	None in 90 days	469	63.3%	272	36.7	22.9***
	1 or more binges	665	52.3	606	47.7
Most drinks per occasion	None	89	67.9%	42	32.1	28.07***
	1–4	287	62.1	175	37.9
	5–8	357	52.4	325	47.7
	9–11	93	47.5	103	52.6
	12 or more	53	48.6	56	51.4
No. of binges in past 90 days		5.37	9.49	6.76	10.22	2.68**
Risk drinkera	No	456	63.7%	260	36.3	24.25***
	Yes	678	52.3	618	47.7
Type contraception	Condoms only	283	65.1%	152	34.9	985.51***
	Condoms with other	52	82.5	11	17.5
	Pills only	7	1.4	479	98.6
	Pills with condoms	401	84.4	74	15.6
	Other	0	0	69	100
Who made contraception decision?	Self	420	48.6	444	51.4	86.82***
	Self and partner	319	57.4	237	42.6
	Self and others	274	75.9	87	24.1
	Health professional	51	61.5	32	38.6
	Parent	36	42.9	48	57.7
	Partner	11	42.3	15	57.7
Reason you use condoms	Avoid STIs	30	53.6	26	46.4	172.24***
	Avoid pregnancy	156	71.2	63	28.8
	Avoid STIs and pregnancy	401	76.8	121	23.2
Reason you use contraception	Avoid STIs	1	50	1	50	129.34***
	Avoid pregnancy	192	36.0	342	64.0
	Avoid STIs and pregnancy	118	72.8	44	27.2

Notes:

^aRisk drinker was a woman who reported that in the last 90 days she had at least one binge episode or whose mean drinks per week were eight or more.

^*p < 0.05,

^**p < 0.01 and

^***p < 0.0001.