Table 1.
Characteristics of adult recipients of HepB-CpG and HepB-alum during the 28 d prior to conception or during pregnancy from August 2018 to November 2020.
| HepB-CpG Recipients | HepB-alum Recipients | Total | ||
| |
N = 81 n (%) |
N = 125 n (%) |
N = 206 n (%) |
p-value |
| Age (years) at vaccination | .09 | |||
| 18-25 | 15 (18.5) | 38 (30.4) | 53 (25.7) | |
| 26-35 | 40 (49.4) | 60 (48.0) | 100 (48.5) | |
| >35 | 26 (32.1) | 27 (21.6) | 53 (25.7) | |
| Mean±sd | 31.41 ± 6.40 | 30.08 ± 6.33 | 30.60 ± 6.37 | .12 |
| Race/Ethnicity | .75 | |||
| Hispanic | 49 (60.5) | 71 (56.8) | 120 (58.3) | |
| Non-Hispanic, Asian | 8 (9.9) | 10 (8.0) | 18 (8.7) | |
| Non-Hispanic, Black | 9 (11.1) | 11 (8.8) | 20 (9.7) | |
| Non-Hispanic, White | 11 (13.6) | 25 (20.0) | 36 (17.5) | |
| None of the above/Unknown | 4 (4.9) | 8 (6.4) | 12 (5.8) | |
| Neighborhood median household income | .05 | |||
| <$40,000 | 10 (12.3) | 10 (8.0) | 20 (9.7) | |
| $40,000 -59,999 | 17 (21.0) | 39 (31.2) | 56 (27.2) | |
| $60,000 -79,999 | 24 (29.6) | 18 (14.4) | 42 (20.4) | |
| $80,000 -99,999 | 7 (8.6) | 20 (16.0) | 27 (13.1) | |
| $100,000+ | 8 (9.9) | 10 (8.0) | 18 (8.7) | |
| Missing | 15 (18.5) | 28 (22.4) | 43 (20.9) | |
| Timing of hepatitis B vaccination prior to or during pregnancy | .04 | |||
| ≤28 d prior to conception | 47 (58.0) | 49 (39.2) | 96 (46.6) | |
| First trimester | 24 (29.6) | 56 (44.8) | 80 (38.8) | |
| Second trimester | 8 (9.9) | 12 (9.6) | 20 (9.7) | |
| Third trimester | 2 (2.5) | 8 (6.4) | 10 (4.9) | |
| Pre-pregnancy BMI* | <.01 | |||
| Underweight (<18.5) | 4 (4.9) | 0 (0.0) | 4 (1.9) | |
| Normal or healthy weight (18.5-24.9) | 17 (21.0) | 44 (35.2) | 61 (29.6) | |
| Overweight (25.0-29.9) | 17 (21.0) | 33 (26.4) | 50 (24.3) | |
| Obese, class 1 (30.0-34.9) | 18 (22.2) | 25 (20.0) | 43 (20.9) | |
| Obese, class 2-3 (≥35.0) | 24 (29.6) | 23 (18.4) | 47 (22.8) | |
| Unknown | 1 (1.2) | 0 (0.0) | 1 (0.5) | |
| History of diabetes in the year prior to conception | 31 (38.3) | 32 (25.6) | 63 (30.6) | .05 |
| Start of prenatal care | .01 | |||
| First trimester | 48 (59.3) | 50 (40.0) | 98 (47.6) | |
| Second trimester | 5 (6.2) | 6 (4.8) | 11 (5.3) | |
| Missing first prenatal care date | 28 (34.6) | 69 (55.2) | 97 (47.1) |
Abbreviations: sd, standard deviation; BMI, body mass index.
*Most recent BMI (kg/m2) from 2 y prior to conception date to conception date.