Table 2.
Rate of effectiveness and safety according to the characteristics of the sample, derived from complete case and multiple imputation analyses
| Characteristics | Effectiveness | Safety | ||||||
|---|---|---|---|---|---|---|---|---|
| Unadjusted complete case rate | Adjusted imputed rate | Unadjusted complete case rate | Adjusted imputed rate | |||||
| n = 4,454 | P | n = 6,034 | P | n = 4,454 | P | n = 6,034 | P | |
| % (95% CI) | % (95% CI) | % (95% CI) | % (95% CI) | |||||
| Overall | 97.7 (97.2–98.1) | 97.7 (97.2–98.1) | 99.7 (99.5–99.8) | 99.8 (99.6–99.9) | ||||
| Asynchronous care | ||||||||
| Synchronous (ref) | 98.3 (97.6–99.0) | Ref | 98.3 (97.7–99.0) | Ref | 99.7 (99.4–100.0) | Ref | 99.8 (99.5–100.0) | Ref |
| Asynchronous | 97.4 (96.8–98.0) | 0.062 | 97.4 (96.9–98.0) | 0.071 | 99.6 (99.4–99.9) | 0.668 | 99.7 (99.6–99.9) | 0.926 |
| Patient age at abortion intake | ||||||||
| 16–19 years (ref)a | 98.5 (96.7–100.0) | Ref | 98.4 (96.7–100.0) | Ref | 99.5 (98.5–100.0) | Ref | 99.6 (98.9–100.0) | Ref |
| 16–17 years | 100.0 (100.0–100.0) | 100.0 (100.0–100.0) | ||||||
| 18–19 years | 98.2 (96.3–100.0) | 99.4 (98.3–100.0) | ||||||
| 20–24 years | 98.2 (97.3–99.0) | 0.780 | 98.1 (97.2–99.0) | 0.789 | 99.6 (99.1–100.0) | 0.876 | 99.7 (99.3–100.0) | 0.932 |
| 25–29 years | 97.4 (96.5–98.3) | 0.382 | 97.5 (96.6–98.3) | 0.408 | 99.7 (99.4–100.0) | 0.575 | 99.8 (99.6–100.0) | 0.604 |
| 30–34 years | 97.4 (96.4–98.3) | 0.370 | 97.4 (96.5–98.3) | 0.398 | 99.7 (99.3–100.0) | 0.711 | 99.7 (99.5–100.0) | 0.745 |
| >34 years | 97.8 (96.9–98.7) | 0.569 | 97.7 (96.7–98.6) | 0.534 | 99.7 (99.4–100.0) | 0.608 | 99.8 (99.6–100.0) | 0.627 |
| Race, ethnicity or ethnic grouping | ||||||||
| American Indian, Alaska Native, Middle Eastern, North African or Multiracialb | 97.3 (95.6–98.9) | 0.932 | 97.8 (96.6–99.0) | 0.733 | 99.0 (97.5–100.0) | 0.413 | 99.7 (99.3–100.0) | 0.474 |
| Asian, Native Hawaiian or Pacific Islander | 97.4 (95.1–99.6) | 0.89 | 97.9 (96.2–99.5) | 0.716 | 99.9 (99.7–100.0) | 0.108 | 99.5 (98.8–100.0) | 0.185 |
| Black or African American | 96.3 (94.1–98.4) | 0.37 | 97.1 (95.5–98.7) | 0.590 | 98.6 (97.3–100.0) | 0.017 | 99.3 (98.7–100.0) | 0.037 |
| Hispanic or Latinx | 99.0 (97.8–100.0) | 0.089 | 98.7 (97.5–100.0) | 0.206 | 100.0 (100.0–100.0) | N/A | 100.0 (100.0–100.0) | N/A |
| White (ref) | 97.2 (96.5–98.0) | Ref | 97.6 (97.0–98.2) | Ref | 99.7 (99.5–100.0) | Ref | 99.8 (99.7–100.0) | Ref |
| Urbanicity | ||||||||
| Suburban or rural (ref) | 97.5 (96.0–99.0) | Ref | 97.4 (95.9–98.9) | Ref | 99.8 (99.3–100.0) | Ref | 99.8 (99.5–100.0) | Ref |
| Urban | 97.7 (97.2–98.2) | 0.777 | 97.7 (97.2–98.2) | 0.728 | 99.7 (99.5–99.8) | 0.68 | 99.7 (99.6–99.9) | 0.674 |
| Previous abortion | ||||||||
| No previous abortion (ref) | 97.8 (97.2–98.4) | Ref | 97.9 (97.3–98.4) | Ref | 99.7 (99.5–99.9) | Ref | 99.8 (99.7–99.9) | Ref |
| One or more previous abortions | 96.9 (95.9–97.9) | 0.140 | 97.3 (96.4–98.1) | 0.247 | 99.4 (98.9–99.8) | 0.204 | 99.6 (99.4–99.9) | 0.188 |
| Previous births | ||||||||
| No previous birth (ref) | 97.6 (96.9–98.3) | Ref | 97.6 (96.9–98.3) | Ref | 99.5 (99.2–99.9) | Ref | 99.7 (99.5–99.9) | Ref |
| One or more previous births | 97.8 (97.1–98.6) | 0.671 | 97.8 (97.1–98.5) | 0.696 | 99.8 (99.6–100.0) | 0.215 | 99.8 (99.7–100.0) | 0.292 |
| Pregnancy duration at abortion intake | ||||||||
| <35 days (ref) | 98.0 (97.2–98.8) | Ref | 97.9 (97.1–98.7) | Ref | 99.8 (99.6–100.0) | Ref | 99.9 (99.7–100.0) | Ref |
| 35–49 days | 97.6 (97.0–98.2) | 0.465 | 97.6 (97.0–98.2) | 0.619 | 99.6 (99.3–99.8) | 0.169 | 99.7 (99.5–99.9) | 0.174 |
| 50–56 days | 98.3 (97.1–99.6) | 0.663 | 98.2 (97.0–99.5) | 0.610 | 99.5 (98.9–100.0) | 0.259 | 99.7 (99.2–100.0) | 0.276 |
| 57–63 days | 95.4 (92.3–98.5) | 0.037 | 96.6 (94.3–99.0) | 0.277 | 100.0 (100.0–100.0) | . | 100.0 (100.0–100.0) | . |
| 64–70 days | 95.5 (90.6–100.0) | 0.182 | 96.7 (93.1–100.0) | 0.493 | 100.0 (100.0–100.0) | . | 100.0 (100.0–100.0) | . |
| Had confirmatory pre-abortion ultrasonography | ||||||||
| No pre-abortion ultrasonography (ref) | 97.8 (97.4–98.3) | Ref | 97.8 (97.4–98.3) | Ref | 99.7 (99.5–99.8) | Ref | 99.7 (99.6–99.9) | Ref |
| Had pre-abortion ultrasonography | 96.2 (94.2–98.1) | 0.046 | 96.2 (94.1–98.2) | 0.063 | 99.7 (99.2–100.0) | 0.829 | 99.8 (99.4–100.0) | 0.844 |
aThe two youngest age categories (16–17 and 18–19 years) were collapsed in the multivariable models to facilitate model convergence. bAmerican Indian, Alaska Native, Middle Eastern, North African, and Multiracial groups were collapsed in the multivariable models to facilitate model convergence.
Estimates were derived from marginal estimates from logistic regressions. Estimates were not adjusted for multiple comparisons. Imputation models included patient age, urbanicity, whether the patient obtained screening ultrasonography, whether the patient obtained synchronous or asynchronous telehealth care, whether the patient participated in CHAT surveys or a virtual clinic, and whether the patient used an abortion fund to pay for any portion of their abortion.