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. Author manuscript; available in PMC: 2017 Mar 16.
Published in final edited form as: Contemp Clin Trials. 2015 May 6;43:63–74. doi: 10.1016/j.cct.2015.04.013

Table 5.

eMoms of Rochester. Selected baseline characteristics of study ITT sample (n= 1689)

Early Pregnancy Weight Category

Total Sample
N = 1689
Healthy
Weighta
n = 871
Overweight

n = 509
Obese
Type Ib
n = 309
P-
valuec
Age at enrollment (years), mean ±sd (n) 27.5± 4.7(1689) 27.4±4.7(871) 27.5± 4.7(509) 27.7± 4.5(309) 0.77

Gestational age at enrollment(weeks), mean ±sd (n) 11.2 ± 4.3(1689) 11.3± 4.3, 871 11.0 ± 4.2(509) 11.3 ± 4.2(309) 0.45

Early pregnancy weight (kg), mean ±sd (n) 68.3±12.9(1599) 59.0 ± 6.3, 826 72.8 ± 7.2(481) 86.9± 9.7(292) <.0001

Gestational age at earliest pregnancy weight (weeks), mean ±sd (n) 8.4 ± 2.1(1599) 8.5,± 2.1, 826 8.4 ± 2.1(481) 8.4 ± 2.2(292) 0.30

Early pregnancy BMI, mean, sd,(n) 25.4 ± 4.3(1252) 22.1,± 1.7(670) 27.2± 1.5,(368) 32.7± 2.1(214) <.0001

Race (n non-missing) 1573 825 464 284 <.0001
  Black or African American, n (%) 388 (24.7) 170 (20.6) 114 (24.6) 104 (36.6)
  American Indian/Native Hawaiian Pacific Islander, n (%) 10 (0.6) 4 (0.5) 4 (0.9) 2 (0.7)
  Asian, n (%) 38 (2.4) 28 (3.4) 4 (0.9) 6 (2.1)
  White or Caucasian, n (%) 1069 (68.0) 594 (72.0) 316 (68.1) 159 (56.0)
  Multiple, n (%) 68 (4.3) 29 (3.5) 26 (5.6) 13 (4.6)

Ethnicity (n non-missing) 1687 869 509 309 0.015
  Hispanic/Latina, n (%) 213 (12.6) 90 (10.4) 78 (15.3) 45 (14.6)

Education (n non-missing) 1340 720 403 217 <.0001
  High School or GED and below, n (%) 291 (21.7) 143 (19.9) 96 (23.8) 52 (24.0)
  Some College or Associate Degree or Vocational School, n (%) 391 (29.2) 176 (24.4) 127 (31.5) 88 (40.6)
  College Graduate, n (%) 326 (24.3) 188 (26.1) 96 (23.8) 42 (19.4)
  Master or Doctoral Degree, n (%) 332 (24.8) 213 (29.6) 84 (20.8) 35 (16.1)

Personal Income in the past 12 month (n non-missing) 1195 637 360 198 0.04
  ≤ $11,999, n (%) 365 (30.6) 193 (30.3) 116 (32.2) 56 (28.3)
  $12,000-24,999, n (%) 145 (12.1) 62 (9.7) 49 (13.6) 34 (17.2)
  $25,000–$34,999, n (%) 143 (12.0) 80 (12.6) 38 (10.6) 25 (12.6)
  $35,000- $49,999, n (%) 213 (17.8) 116 (18.2) 56 (15.6) 41 (20.7)
  ≥$50,000, n (%) 250 (20.9) 144 (22.6) 78 (21.7) 28 (14.1)
  Don't, n (%) 79 (6.6) 42 (6.6) 23 (6.4) 14 (7.1)

Relationship status (n non-missing) 1336 717 404 215 0.0004
  Single, n (%) 140 (10.5) 59 (8.2) 42 (10.4) 39 (18.1)
  Married / Co-habitating, n (%) 1183 (88.6) 654 (91.2) 356 (88.1) 173 (80.5)
  Separated / Divorced, n (%) 13 (1.0) 4 (0.6) 6 (1.5) 3 (1.4)

Parity (n non-missing) 1686 869 508 309 <.0001
  Nulliparous, n (%) 775 (46.0) 439 (50.5) 215 (42.3) 212 (39.2)
  Primaparous, n (%) 550(32.6) 281 (32.3) 166 (32.7) 103 (33.3)
  Multiparous [n (%)] 361 (21.4) 149 (17.2) 127 (25.0) 85 (27.5)

Smoking (n non-missing) 1393 738 425 230 0.01
  Non-smoker, n (%) 941 (67.6) 522 (70.7) 280 (65.9) 139 (60.4)
  Exsmoker, n (%) 364 (26.1) 177 (24.0) 120 (28.2) 67 (29.1)
  Current smoker, n (%) 88 (6.3) 39 (5.3) 25 (5.9) 24 (10.4)

Alcohol (in the past 30 days) (n non-missing) 1395 740 425 230
  None, n (%) 1245 (89.3) 658 (88.9) 382 (89.9) 205 (89.1) 0.88

CES-D score, mean ±sd (n) 8.2±4.9(1414) 7.8±4.8(749) 8.6±4.9(430) 8.8±5.0(235) 0.003

ACOG criteria using PPAQ (n non-missing) 1359 729 409 221 .001
  Met recommendation, n (%) 599 (44.1) 349 (47.9) 175 (42.8) 75 (33.9)

Employment for Pay (n non-missing) 1342 719 404 219 0.42
  Yes, n (%) 959 (71.5) 522 (72.6) 288 (71.3) 149 (68.0)

Perceived Availability of Healthy Foods Scale (n non-missing) 1338 718 401 219
  Strongly agree, n (%) 469 (35.0) 275 (38.3) 143 (35.7) 51 (32.3) 0.0002

PA neighborhood environment (n non-missing) 1256 677 377 202
  High Crime, n (%) 249 (19.8) 118 (17.4) 83 (22.0) 48 (23.8) 0.06
a

Includes 18 underweight women who over-reported their weight at screening

b

Includes 45 obese class II women who under-reported their weight at screening

c

Differences across BMI categories assessed by 1-way ANOVA (F-test; 2df) for continuous variables and by Chi-Square test for categorical variables. Differences in non-normal continuous factors across BMI categories was assessed using the Kruskal-Wallis test.