Table 1.

Demographic and substance use characteristics of sexually active non-pregnant women (n = 517).

Characteristic	% (95% CI; n)
Age category (years)
18–24	46.2 (41.9–50.5; 239)
25–29	31.3 (27.3–35.3;162)
30–34	22.4 (18.8–26.0;116)
Prioritized ethnicitya
Māori	14.3 (11.3–17.3;73)
Pacific	2.2 (0.9–3.4; 11)
Asian	5.9 (3.8–7.9; 30)
New Zealand European/ other	77.7 (74.1–81.3; 397)
Marital statusb
In a permanent relationship	45.7 (41.3–50.0; 231)
Not in a permanent relationship	54.3 (50.0–58.7; 275)
Highest level of educationb
Some secondary education or less	4.9 (3.1–6.8; 25)
Completed secondary education	16.4 (13.2–19.6; 83)
Some or completed tertiary education	78.7 (75.1–82.2; 398)
Current employmentb
Employed	81.6 (78.2–85.0; 413)
Unemployed	18.4 (15.0–21.8; 93)
Use of community service cardc
Yes	18.1 (14.7–21.4; 91)
Smokingd
Yes	24.5 (20.8–28.2; 126)
Frequency of alcohol consumption in the past yeare
Never	5.8 (3.8–7.8; 30)
Monthly or less	28.1 (24.2–32.0; 145)
2–4 times a month	37.0 (32.8–41.2; 191)
2–3 times a week	22.7 (19.1–26.3; 117)
4–5 times a week	3.9 (2.2–5.5; 20)
6 or more times a week	2.5 (1.2–3.9; 13)
Typical day alcohol consumptionf
2 standard drinks or less	20.4 (32.8–41.4; 178)
More than 2 standard drinks	79.6 (58.6–67.2; 302)
Consume 6 or more standard drinks on one occasion(binge)g
Yes	76.4 (73.8–81.2; 372)

CI: confidence interval.

^aMissing data n = 6.

^bMissing data n = 11.

^cMissing data n = 13.

^dMissing data n = 2.

^eMissing data n = 1.

^fMissing data n = 7.

^gExcludes non-drinkers.