TABLE 1

Baseline Characteristics of Study Participants by Study Arm

CharacteristicaTotal (n = 1093)VSM (n = 542)VI (n = 371)UC (n = 180)
Hesitancy by PACVb
 Median (IQR)17 (26.0)13.0 (26.0)17.0 (34.0)15.0 (31.5)
Mother’s age at enrollment
 Mean (SD), y31.6 (4.3)31.6 (4.4)31.5 (4.3)31.4 (4.1)
No. of children, n (%)c,d
 Pregnant with first child518 (47.4)246 (45.4)189 (50.9)83 (46.1)
 Have previous child or children573 (52.4)296 (54.6)181 (48.8)96 (53.3)
Race, n (%)c,d
 White950 (86.9)476 (87.8)315 (84.9)159 (88.3)
 Othere138 (12.6)64 (11.8)54 (14.6)20 (11.1)
Household income, $, n (%)c,d
 ≤80 000 440 (40.3)208 (38.4)157 (42.3)75 (41.7)
 >80 000597 (54.6)306 (56.5)194 (52.3)97 (53.9)
Education, n (%)c,d
 Some college or less186 (17.0)93 (17.2)63 (17.0)30 (16.7)
 College and higher905 (82.8)449 (82.8)307 (82.8)149 (82.8)
Use of Internet for health, n (%)c,d
 Less than every week410 (37.5)210 (38.8)140 (37.7)60 (33.3)
 Every week or more681 (62.3)332 (61.3)230 (62.0)119 (66.1)
  • IQR, interquartile range.

  • a None of the characteristics were statistically different across study arms (P >.05).

  • b Assessed by using the PACV screening survey.

  • c Percentages represent column percentages.

  • d Numbers do not equal column total because of missing data.

  • e Includes African American, American Indian, Asian American, Pacific Islander, and multiracial.