Demographic characteristics, contraceptive use, and obstetric history of women with BV compared with controls (univariate analysis)
| Characteristic | Women with BV n = 890 (%) | Controls n = 890 (%) | Odds ratio (95% CI) | p Value (overall) |
|---|---|---|---|---|
| NS, not significant. | ||||
| Age (y) | (NS) | |||
| ⩽19 | 51/889 (6) | 67/890 (8) | 0.80 (0.52 to 1.11) | NS |
| 20–29 | 530/889 (60) | 527/890 (59) | 1 | – |
| 30–39 | 223/889 (25) | 213/890 (24) | 1.00 (0.83 to 1.30) | NS |
| ⩾40 | 85/889 (9) | 83/890 (9) | 1.00 (0.74 to 1.41) | NS |
| Marital status | (0.005) | |||
| Never married | 592/867 (68) | 601/864 (69.5) | 1 | – |
| Married/de facto | 139/867 (16) | 169/864 (19.5) | 0.80 (0.65 to 1.07) | NS |
| Separated/divorced/widowed | 136/867 (16) | 94/864 (11) | 1.50 (1.10 to 1.96) | 0.01 |
| Occupation | (<0.05) | |||
| Employed | 450/852 (53) | 492/859 (57) | 1 | – |
| Unemployed | 151/852(18) | 124/859 (14) | 1.30 (1.02 to 1.74) | <0.05 |
| Benefits | 34/852 (4) | 23/859 (3) | 1.60 (0.94 to 2.79) | NS |
| Home duty | 45/852 (5) | 34/859 (4) | 1.50 (0.91 to 2.30) | NS |
| Student | 112/852 (13) | 138/859 (16) | 0.90 (0.67 to 1.74) | NS |
| Sex work | 60/852 (7) | 48/859 (6) | 1.40 (0.92 to 2.04) | NS |
| Country of birth | (NS) | |||
| Australia/NZ | 452/832 (54) | 504/833 (61) | 1 | – |
| N America/Europe | 198/832 (24) | 169/833 (20) | 1.10 (0.43 to 2.74) | NS |
| Asia | 132/832 (16) | 123/833 (15) | 1.30 (1.00 to 1.60) | 0.05 |
| Others | 51/832 (6) | 36/833 (4) | 1.20 (0.88 to 1.52) | NS |
| Contraceptive used | ||||
| Hormonal | 238/835 (29) | 307/822 (37) | 0.70 (0.54 to 0.82) | <0.0001 |
| IUD | 45/835 (5) | 20/822 (2) | 2.30 (1.34 to 3.90) | <0.01 |
| Diaphragm/cervical cap | 24/835 (3) | 24/822 (3) | 1 | – |
| Nil/inadequate | 256/835 (31) | 211/822 (26) | 1.30 (1.03 to 1.59) | <0.05 |
| Obstetric history | ||||
| Past pregnancy | 489/865 (57) | 391/862 (45) | 1.60 (1.30 to 1.89) | <0.0001 |
| Termination of pregnancy | 291/726 (40) | 226/729 (31) | 1.50 (1.20 to 1.78) | <0.001 |
| Miscarriage | 128/723 (18) | 88/725 (12) | 1.60 (1.18 to 2.06) | <0.01 |
| Live birth | 184/723 (25) | 129/724 (18) | 1.50 (1.19 to 1.88) | <0.001 |