Table 3.
Demographics and substance use of sexually active non-pregnant women according to contraception failure (n = 517).
| <10% Annual failure rate | ⩾10% Annual failure rate | Statistics | |
|---|---|---|---|
| % (95% CI; n) | |||
| Demographic characteristics | |||
| Age category (years) | |||
| 18–24 | 47.4 (42.6–52.3; 193) | 41.8 (32.6–51.0; 46) | χ2 = 2.31 df = 3 p = 0.00 |
| 25–29 | 29.7 (25.3–34.2; 121) | 31.5(28.2–46.3; 41) | |
| 30–34 | 22.9 (18.8–26.9; 93) | 20.9(13.3–28.5; 23) | |
| Prioritized ethnicitya | |||
| Māori | 13.6 (10.63–16.57; 55) | 16.7(13.47–19.93; 18) | χ2 = 21.39 df = 2 p = 0.002 |
| Pacific | 1.0 (0.14–1.86) | 6.5 (4.36–8.64) | |
| Asian | 4.5 (2.4–6.5; 18) | 11.1(5.2-17.0; 12) | |
| NZ European/other | 80.9 (77.1–84.7; 326) | 65.7 (56.8–74.7; 71) | |
| Marital statusb | |||
| In a permanent relationship | 178 (44.6) | 53 (49.5) | χ2 = 0.82 df = 1 p = 0.364 |
| Not in a permanent relationship | 221 (54.4) | 54 (50.5) | |
| Highest level of educationb | |||
| No tertiary education | 19.5 (15.7–23.4; 78) | 28 (19.5–36.5; 30) | χ2 = 3.62 df = 1 p = 0.057 |
| Some or completed tertiary education | 80.5 (76.6–84.3; 321) | 72 (63.5–80.5; 77) | |
| Current employmentb | |||
| Employed | 82.2 (78.9–86.3; 328) | 87.3 (71.8–87.1; 85) | χ2 = 0.43 df = 1 p = 0.512 |
| unemployed | 17.8 (14.1–21.7; 71) | 19.7 (12.9–28.2; 22) | |
| Use of community service cardc | |||
| Yes | 17.9 (14.1–21.7; 71) | 19.0 (11.3–26.1; 20) | χ2 = 0.37 df = 1 p = 0.847 |
| No | 82.1; 78.3–85.9; 326) | 81.0 (73.9–88.7; 87) | |
| Substance use | |||
| Smokingd | |||
| Yes | 74.3 (70.1–78.6; 301) | 73.6 (65.4–81.9; 81) | χ2 = 0.21 df = 1 p = 0.884 |
| No | 25.7 (21.4–29.9; 104) | 26.4 (18.1–34.6; 29) | |
| Frequency of alcohol consumption in the past yeare | |||
| Never | 5.2 (3.0–7.3; 21) | 6.4 (3.1–13.3; 9) | χ2 = 6.41 df = 3 p = 0.094 |
| Less than monthly | 26.1(21.8–30.4; 106) | 30.9 (26.5–44.4; 39) | |
| 2–4 times a month | 37.9 (33.2–42.7; 154) | 40.7(24.8–42.5; 37) | |
| 2 or more times a week | 30.8 (26.3–35.3; 125) | 22.7(14.9–30.6; 25) | |
| Typical day alcohol consumptionf | |||
| 2 standard drinks or less | 39.6 (34.8–44.4; 160) | 44.8 (37.4–56.2; 51) | χ2 = 1.83 df = 1 p = 0.176 |
| More than 2 standard drinks | 60.4 (55.6–65.2; 244) | 64.2 (43.8–62.6; 58) | |
| Frequency of consuming six or more standard drinks on one occasion (binged)g | |||
| Never | 20.3 (16.2–24.3; 78) | 35.6 (26.3–45.0; 36) | χ2 = 14.74 df = 2 p < 0.001 |
| Monthly or less | 68.8 (64.2–73.5; 265) | 49.5 (39.8–59.3; 50) | |
| Weekly or more often | 10.9 (7.8–14.0; 42) | 14.9 (7.9–21.8; 15) | |
CI: confidence interval.
a
Missing data n = 6.
b
Missing data n = 11.
c
Missing data n = 13.
d
Missing data n = 2.
e
Missing data n = 1.
f
Missing data n = 7.
g
Excludes non-drinkers.