Table 1.
Participant demographics.
| Copper IUD (n=67) | Oral LNG 1.5 mg plus LNG IUD(n=121) | P-value | |
|---|---|---|---|
| N (%) | N (%) | ||
| Age | |||
| 18–24 years old | 40 (60) | 74 (61) | 0.6 |
| 25–34 years old | 25 (37) | 47 (39) | |
| 35+ years old | 1 (1) | 0 (0) | |
| UPI Timing | |||
| <24h | 37 (55) | 64 (53) | 0.99 |
| 24–48 h | 19 (28) | 38 (31) | |
| >48 h | 11 (16) | 19 (16) | |
| #UPI in past 2 weeks | |||
| 1 | 33 (49) | 72 (60) | 0.10 |
| 2 | 12 (18) | 26 (21) | |
| 3 + | 22 (33) | 23 (19) | |
| Days since LMP | 17.1 (SD 8.2) | 16.8 (SD 8.9) | 0.82 |
| Menstrual Cycle Length (days) | 29.4 (SD 2.0) | 28.8 (SD 2.0) | 0.06 |
| Race/Ethnicity | |||
| White | 39 (59) | 71 (60) | 0.56 |
| Hispanic | 19 (29) | 39 (33) | |
| Other | 8 (12) | 9 (7) | |
| Income | |||
| <$24,000 | 49 (74) | 83 (69) | 0.75 |
| $24,000–$47,999 | 14 (21) | 34 (28) | |
| $48,000–$60,000 | 1 (2) | 1 (1) | |
| >$60,000 | 2 (3) | 3 (2) | |
| Insurance | |||
| No | 37 (57) | 69 (58) | 0.94 |
| Yes | 28 (43) | 51 (42) | |
| Previous Pregnancy | |||
| No | 35 (52) | 55 (45) | 0.37 |
| Yes | 32 (48) | 66 (55) | |
| Positive STI Screen | 4 (7) | 6 (7) | 0.75 |
| BMI | |||
| Underweight/Normal (< 25 kg/m2) | 38 (60) | 45 (39) | 0.035 |
| Overweight (25–29.9 kg/m2) | 15 (24) | 44 (38) | |
| Obese (30+ kg/m2) | 10 (16) | 27 (23) |
IUD, intrauterine device; LNG, levonorgestrel; UPI, unprotected intercourse; BMI, body mass index; LMP, last menstrual period; STI, sexually transmitted infection; SD, standard deviation. Percentage totals may not equal 100% due to rounding.