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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 3. All Secondary Outcome Measures for the Brief Intervention Group vs the Assessed Control Group at 3, 6, and 12 Monthsa.

Brief Intervention Group Assessed Control Group
Baseline (n = 239)b At 3 mo (n = 192) At 6 mo (n = 188) At 12 mo (n = 165) Baseline (n = 232)b At 3 mo (n = 179) At 6 mo (n = 176) At 12 mo (n = 165)
Composite Abuse Scalec
Overall score, mean (95% CI) 12.7 (10.3-15.0) 12.2 (9.5-14.9) 7.6 (5.5-9.6) 7.3 (5.2-9.4) 15.9 (13.0-18.8) 12.6 (9.8-15.5) 8.6 (6.5-10.6) 11.1 (7.9-14.3)
Physical, No. (%) 70 (29.3) 61 (31.8) 34 (18.1) 33 (20.0) 84 (36.4) 57 (29.7) 42 (24.3) 38 (23.2)
Emotional, No. (%) 179 (74.9) 122 (63.5) 94 (50.0) 82 (49.7) 186 (80.5) 114 (63.7) 95 (54.9) 86 (52.4)
Stalking, No. (%) 81 (33.9) 70 (36.5) 59 (31.4) 44 (26.7) 80 (34.6) 65 (36.3) 53 (30.6) 44 (26.8)
Severe combined abuse, No. (%) 53 (22.2) 50 (26.0) 25 (13.3) 17 (10.3) 51 (22.0) 40 (22.3) 22 (12.7) 24 (14.6)
Timeline Follow-Backd
Drinking frequency
 Days/mo, % (95% CI) 27.0 (24.0-30.3) 26.4 (22.5-30.3) 23.3 (19.0-27.0) 20.0 (17.0-24.0) 26.8 (23.3-30.3) 26.3 (22.0-30.0) 26.4 (22.0-31.0) 21.4 (18.0-25.0)
 Days/wk, mean (95% CI) 1.9 (1.7-2.0) 1.8 (1.6-2.1) 1.6 (1.4-1.9) 1.4 (1.2-1.7) 1.9 (1.7-2.1) 1.8 (1.6-2.1) 1.90 (1.57-2.14) 1.5 (1.2-1.8)
No. of drinks/d, mean (95% CI) 1.1 (0.9-1.1) 0.9 (0.8-1.1) 0.9 (0.7-1.1) 0.7 (0.5-0.8) 1.1 (0.9-1.2) 1.0 (0.7-1.2) 0.9 (0.7-1.1) 0.7 (0.6-0.9)
Heavy alcohol consumption (≥4 drinks/d), mean (95% CI), d 3.0 (2.5-3.6) 3.1 (2.3-3.9) 2.2 (1.5-2.8) 2.3 (1.5-3.0) 3.4 (2.7-3.8) 3.1 (2.2-4.0) 2.0 (1.4-2.5) 2.2 (1.5-2.9)
Quality of Life (QOL) Scale, Mean (95% CI)e
How would you rate your QOL? 2.3 (2.2-2.4) 2.2 (2.1-2.4) 2.1 (2.0-2.3) 2.2 (2.1-2.3) 2.3 (2.2-2.5) 2.4 (2.2-2.5) 2.2 (2.0-2.3) 2.2 (2.0-2.3)
How much do you enjoy life? 2.3 (2.2-2.5) 2.3 (2.2-2.4) 2.3 (2.1-2.4) 2.2 (2.0-2.4) 2.4 (2.2-2.5) 2.4 (2.2-2.5) 2.3 (2.1-2.5) 2.4 (2.2-2.5)
How safe do you feel in your daily life? 2.2 (2.1-2.3) 2.1 (2.0-2.3)f 2.1 (2.0-2.3) 2.1 (1.9-2.2) 2.2 (2.1-2.3) 2.3 (2.2-2.5)f 2.2 (2.0-2.3) 2.2 (2.1-2.4)
Self-Rated Health
How would you say your health has been? mean (95% CI)g 3.2 (3.0-3.3) 3.0 (2.8-3.1) 2.8 (2.6-2.9)h 2.9 (2.7-3.1) 3.4 (3.3-3.6) 3.2 (3.1-3.4) 3.1 (2.9-3.3)h 3.0 (2.8-3.2)
Relationship Satisfaction Scale score, mean (95% CI)i 3.2 (3.0-3.4) 3.2 (3.0-3.5) 3.6 (3.3-3.8)j 3.3 (3.1-3.6) 3.0 (2.8-3.2) 2.9 (2.6-3.1) 3.2 (2.9-3.4)j 3.4 (3.1-3.6)
Exercise frequency, mean (95% CI), d/wk 3.1 (2.8-3.4) 3.2 (2.8-3.5) 2.8 (2.5-3.1) 3.2 (2.8-3.5) 3.0 (2.7-3.4) 3.2 (2.8-3.6) 3.0 (2.7-3.5) 3.2 (2.9-3.7)
Amount of sleep, mean (95% CI), h/night 5.6 (5.4-5.9) 5.8 (5.5-6.0) 5.7 (5.5-6.0) 6.0 (5.7-6.3) 5.5 (5.2-5.7) 5.8 (5.5-6.1) 5.9 (5.6-6.2) 5.8 (5.6-6.1)
Smoke cigarettes, No. (%) 135 (56.7) 98 (51.0) 96 (51.1) 79 (47.9) 144 (62.3) 101 (56.4) 102 (58.0) 89 (53.9)
Self-efficacyk
 Mean (95% CI) 30.5 (29.8-32.0) 31.9 (30.6-33.2) 31.7 (30.3-33.4) 31.4 (30.4-32.4) 29.6 (28.9-31.3) 29.8 (28.4-31.3) 29.7 (28.7-30.7) 30.3 (29.4-31.3)
 Median (IQR) 30 (27-35) 32 (28-36) 31 (27-36) 32 (28-36) 30 (26-34) 30 (25-34) 30 (26-35) 31 (26-36)
Readiness to Change Scalel
Drinking
 Mean (95% CI) 4.1 (3.6-4.6) 4.4 (3.9-5.0)m 4.3 (3.7-4.9) 4.6 (3.9-5.2) 4.3 (3.9-4.8) 3.5 (2.9-4.0)m 3.9 (3.3-4.4) 3.9 (3.2-4.5)
 Median (IQR) 5 (0-8) 5 (0-8) 5 (0-8) 5 (0-8) 5 (1-8) 2 (0-8) 3 (0-8) 2 (0-8)
Relationship
 Mean (95% CI) 5.9 (5.5-6.3) 5.8 (5.3-6.4) 6.0 (5.5-6.5) 5.9 (5.3-6.5) 6.0 (5.6-6.4) 5.5 (5.1-6.0) 5.6 (5.1-6.1) 6.0 (5.5-6.6)
 Median (IQR) 6 (5-8) 8 (2-8) 8 (2-9) 8 (2-10) 6 (5-8) 5 (2-8) 5 (2-8) 8 (4-10)
Social Support, No. (%)
Do you have someone to talk to about any problem? 196 (83.1) 170 (89.5) 165 (87.8) 146 (88.5) 193 (83.9) 154 (86.0) 150 (85.2) 140 (84.9)
Stay with if needed? 188 (81.0) 157 (82.6) 160 (85.6)n 141 (85.5)n 174 (75.7) 138 (77.1) 136 (77.3)n 125 (75.8)n
Borrow money from if needed? 172 (74.1) 145 (75.6) 145 (77.5)o 127 (80.0)o 149 (65.1) 124 (69.7) 115 (65.0)o 107 (65.6)o
Engagement With Services, No. (%)
Any 35 (14.6) 28 (14.6) 26 (13.9) 13 (8.0) 44 (19.1) 26 (14.5) 22 (12.6) 20 (12.2)
Police or courts for family violence 18 (7.5) 12 (6.3) 11 (5.9) 5 (3.0) 20 (8.7) 13 (7.3) 11 (6.3) 9 (5.6)
Domestic violence 10 (4.2) 15 (7.8) 9 (4.8) 4 (2.4) 23 (10.0) 9 (5.0) 7 (4.0) 10 (6.1)
Alcohol or drug 11 (4.6) 13 (6.8) 12 (6.4) 6 (3.6) 13 (5.7) 10 (5.6) 7 (4.0) 6 (3.6)
Engagement With Treatment, No. (%)
Any 161 (67.7) 132 (69.4) 121 (64.7) 107 (64.8) 169 (73.2) 120 (67.0) 117 (66.5) 122 (73.9)
Medical 149 (62.6) 117 (60.9) 112 (60.2) 97 (58.8) 160 (69.3) 109 (61.0) 104 (59.1) 114 (69.1)
Mental health 40 (17.2) 37 (19.4) 30 (16.0) 33 (20.1) 49 (21.4) 39 (22.0) 39 (22.3) 38 (23.0)
Drugs or alcohol 12 (5.2) 14 (7.3) 7 (3.8) 10 (6.1) 9 (3.9) 12 (6.7) 11 (6.3) 8 (4.9)
Family problems 16 (7.7) 13 (6.9) 12 (6.4) 8 (4.8) 18 (8.2) 9 (5.3) 15 (8.7) 12 (7.4)
Taken steps to obtain safetyp 55 (29.0) 45 (24.2) 53 (32.1) 58 (32.6) 51 (29.5) 47 (28.5)

Abbreviation: IQR, interquartile range.

a

In creating composite variables, only those women who had at least 80% of nonmissing data for the individual items obtained a value for the composite variable. Otherwise, the composite score for the woman was set to missing.

b

The baseline value of the outcome variable was included in the model as a covariate.

c

Contains 30 questions (score range: 0-150). Specific individual items were used to determine if the results indicate the presence of physical, emotional, stalking, or severe combined abuse.

d

Data are collected using a calendar to record the number of drinks each day for the past month (28 days).

e

For the question regarding QOL, a score of 1 indicates very good and 5 indicates very poor. For the question regarding enjoyment of life, a score of 1 indicates extremely and 5 not at all. For the question regarding feelings of safety, a score of 1 indicates extremely and 5 not at all.

f

P = .03 at 3 months controlling for baseline. Calculated using analysis of variance.

g

A score of 1 indicates excellent and 5 indicates poor.

h

P = .006 at 6 months controlling for baseline. Calculated using analysis of variance.

i

This is 1 representative item from the Dynamic Relationship Scale (score range: 0, extremely unhappy; 6, extremely happy).

j

P = .03 at 6 months controlling for baseline. Calculated using analysis of variance.

k

The Self-Efficacy Scale scores range from 10 to 40; greater scores indicate greater levels of self-efficacy.

l

Measures readiness to make changes on a scale from 0 (okay with changes) to 10 (maintaining changes made).

m

P = .004 at 3 months controlling for baseline. Calculated using analysis of variance.

n

P = .04 at 6 months and P = .01 at 12 months (both controlling for baseline). Calculated using the χ2 test.

o

P = .02 at 6 months and P = .03 at 12 months (both controlling for baseline). Calculated using the χ2 test.

p

Captured with a binary and the following questions: “Have you taken any steps in the past 3 months to increase your safety? What are they?” These questions were only asked at the 3 follow-up time points and not at baseline.

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