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. Author manuscript; available in PMC: 2017 Oct 12.
Published in final edited form as: JAMA. 2015 Aug 4;314(5):466–477. doi: 10.1001/jama.2015.8369

Table 1. Baseline Demographics and Risk Factors by Study Groupa.

Overall Brief Intervention Group Control Groups
Assessed No Contact
Sociodemographics
No. of women 592 239 232 121
Age, y
 Mean (95% CI) 32.1 (31.3-33.0) 32.3 (30.9-33.6) 32.1 (30.6-33.6) 32.0 (30.0-33.9)
 Median (IQR) 29 (23-40) 29 (24-39) 29 (24-41) 28 (23-40)
Level of education
 Some high school 116 (19.6) 49 (20.5) 48 (20.7) 19 (15.7)
 High school degree 164 (27.7) 61 (25.5) 65 (28.0) 38 (31.4)
 Some college or degree 273 (46.1) 107 (44.8) 106 (45.7) 60 (49.6)
 Some postgraduate or degree 37 (6.3) 22 (9.2) 12 (5.2) 3 (2.5)
 Missing or unknown 2 (0.3) 0 1 (0.4) 1 (0.8)
Household income, $
 ≤10 000 174 (29.4) 61 (25.5) 72 (31.0) 41 (33.9)
 10 000-19 999 129 (21.8) 51 (21.3) 52 (22.4) 26 (21.5)
 20 000-49 999 164 (27.7) 73 (30.5) 60 (25.9) 31 (25.6)
 ≥50 000 70 (11.8) 34 (14.2) 23 (9.9) 13 (10.7)
 Missing 55 (9.3) 20 (8.4) 25 (10.8) 10 (8.3)
Employment
 No 299 (50.5) 119 (49.8) 114 (49.1) 66 (54.5)
 Yes 291 (49.2) 120 (50.2) 117 (50.4) 54 (44.6)
 Missing 2 (0.3) 0 1 (0.4) 1 (0.8)
Marital status
 Single 459 (77.5) 184 (77.0) 181 (78.0) 94 (77.7)
 Married 86 (14.5) 37 (15.5) 31 (13.4) 18 (14.9)
 Divorced, widowed, or separated 46 (7.8) 18 (7.5) 19 (8.2) 9 (7.4)
 Missing 1 (0.2) 0 1 (0.4) 0
Partnership status
 Single
  Not dating 61 (10.3) 27 (11.3) 22 (9.5) 12 (9.9)
  Dating 93 (15.7) 34 (14.2) 38 (16.4) 21 (17.4)
 Relationship
  Off and on 96 (16.2) 31 (13.0) 41 (17.7) 24 (19.8)
  Committed 330 (55.7) 141 (59.0) 128 (55.2) 61 (50.4)
 Missing 12 (2.0) 6 (2.5) 3 (1.3) 3 (2.5)
Sex of partner
 Male 489 (82.6) 203 (84.9) 186 (80.2) 100 (82.6)
 Female 41 (6.9) 17 (7.1) 16 (6.9) 8 (6.6)
 Other 2 (0.3) 1 (0.4) 1 (0.4) 0
 Missing 60 (10.1) 18 (7.5) 29 (12.5) 13 (10.7)
No. of children (age <18 y) in household
 0 261 (44.1) 116 (48.5) 96 (41.4) 49 (40.5)
 1 124 (20.9) 49 (20.5) 47 (20.3) 28 (23.1)
 ≥2 186 (31.4) 65 (27.2) 81 (34.9) 40 (33.1)
 Missing 21 (3.5) 9 (3.8) 8 (3.4) 4 (3.3)
Race/ethnicityb
 Black 471 (80.1) 178 (74.8) 187 (81.3) 106 (88.3)
 White 108 (18.4) 53 (22.3) 38 (16.5) 17 (14.2)
 Native American 20 (3.4) 11 (4.6) 5 (2.2) 4 (3.3)
 Hispanic 28 (4.8) 13 (5.5) 12 (5.2) 3 (2.5)
 Pacific Islander 3 (0.5) 2 (0.8) 0 1 (0.8)
 Asian 8 (1.4) 4 (1.7) 3 (1.3) 1 (0.8)
 Other 35 (6.0) 14 (5.9) 17 (7.4) 4 (3.3)
 Missing 4 (0.7) 1 (0.4) 2 (0.9) 1 (0.8)
Pregnant during the first 3 mo
 No 477 (80.6) 196 (82.0) 199 (85.8) 82 (67.8)
 Yes 86 (14.5) 43 (18.0) 33 (14.2) 10 (8.3)
 Missing 29 (4.9) 0 0 29 (24.0)
Chief concern at enrollment
 Injury 78 (13.2) 30 (12.6) 30 (12.9) 18 (14.9)
 Medical 420 (70.9) 173 (72.4) 165 (71.1) 82 (67.8)
 Gynecologic or urinary 79 (13.3) 28 (11.7) 32 (13.8) 19 (15.7)
 Other 15 (2.5) 8 (3.3) 5 (2.2) 2 (1.7)
Risk Factors
No. of women 566 239 232 95c
Women's Experience with Battering Scale26 scored
 Mean (95% CI) 19.6 (18.5-20.7) 19.7 (17.8-21.4) 20.5 (18.6-22.3) 17.1 (14.5-19.5)
 Median (IQR) 13 (10-24) 13 (10-25) 13 (10-27) 11 (10-20)
Danger Assessment27 scoree
 Mean (95% CI) 9.9 (9.3-10.5) 10.0 (9.1-10.9) 10.3 (9.3-11.2) 8.5 (7.2-9.8)
 Median (IQR) 13 (4-13) 13 (4-14) 9 (5-14) 7.5 (4-12)
Alcohol dependencef 87 (15.5) 32 (13.0) 39 (16.4) 17 (17.9)
Smoking 334 (59.0) 135 (56.7) 144 (62.3) 55 (57.9)
Drug use
 Illegal, including marijuana 258 (45.7) 100 (46.1) 105 (49.5) 34 (35.8)
 Illegal, not including marijuana 98 (17.4) 41 (17.2) 46 (20.0) 11 (11.6)
 Prescription misuse 64 (11.6) 24 (10.4) 33 (14.8) 7 (7.4)
Depression scoreg 488 (86.2) 210 (87.9) 231 (85.3) 79 (84.0)
Posttraumatic stress disorderh 228 (40.4) 100 (41.8) 95 (41.3) 32 (34.0)
Childhood sexual abuse 243 (43.2) 100 (41.8) 98 (42.8) 45 (47.9)
Partner drinking 110 (20.0) 46 (19.4) 38 (16.6) 12 (12.5)

Abbreviation: IQR, interquartile range.

a

Data are expressed as No. (%) unless otherwise indicated. For the between-treatment comparisons, age was analyzed using a general linear model and all categorical variables were analyzed using the χ2 test.

b

Participants instructed to “check all that apply”; therefore, percentages add to more than 100%. Differences between groups used a binary variable (black vs not black).

c

Data were only collected at 3 months for those who completed the follow-up interview (n = 95; 79% retention).

d

Score range: 10 to 40 (0-19 indicating lower severity and ≥20 indicating higher severity).

e

Score range: 0 to 39 (level of danger: 0-7, variable; 8-13, increased; 14-17, severe; ≥18, extreme).

f

Indicated by an Alcohol Use Disorders Identification Test28 (AUDIT) score of greater than 13.

g

Indicated by a Center for Epidemological Studies-Depression 10 score of 10 or greater (score range: 0-30).

h

Indicated by a Primary Care Post-Traumatic Stress Disorder score of 3 or greater (score range: 0-4).