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. Author manuscript; available in PMC: 2011 Feb 17.
Published in final edited form as: Int Psychogeriatr. 2010 Sep 15;22(8):1240–1247. doi: 10.1017/S1041610210001523

Table 1.

Risks in prevention group by race

BLACK N =
72 MEAN
(SD)
WHITE N =
143 MEAN
(SD)
RATIO
(BLACK:
WHITE)
χ2 or t / df /p
SOCIODEMOGRAPHIC AND PSYCHOSOCIAL STATUS
Age 66.6 (9.9) 65.5 (11.6) 0.71 / 213 / 0.48
Female, % 74 66 1.1:1 1.37 / 1 / 0.24
Education in years 13.5 (2.4) 15.2 (2.8) 4.34 / 210 / 0.0001
Census median income 22,917
(n = 71)
44,936
(n = 139)
Wilcoxon p < 0.0001
Bereavement, % 15 15 1:1 0.01 / 1 / 0.98
Living alone, % 46 31 1.5:1 4.27 / 1 / 0.04
Caregiver, % 25 21 1.2:1 0.45 / 1 / 0.50
Interpersonal Support Evaluation List
(range = 0–12, higher better)
  Self-esteem 8.1 (2.0) 7.6 (2.2) 1.56 / 180 / 0.12
  Belonging 9.2 (2.5) 8.5 (2.8) 1.73 / 179 / 0.09
  Appraisal 9.2 (2.6) 8.7 (2.8) 1.28 / 180 / 0.20
  Tangible 9.0 (2.6) 8.7 (2.6) 0.54 / 179 / 0.59
MEDICAL COMORBIDITY AND HEALTH-RELATED QUALITY OF LIFE
Obesity, % 64 41 1.6:1 9.82 / 1 / 0.002
Body Mass Index 33.6 (7.4) 29.0 (6.6) 4.44 / 201 / 0.0001
Chronic pain, % 28 29 1:1 0.02 / 1 / 0.89
Functional disability, % 25 11 2.3:1 6.86 / 1 / 0.01
Cumulative Illness Rating
  Total 8.6 (3.9) 7.2 (3.7) 2.51 / 210 / 0.02
  Count 5.3 (2.1) 4.7 (2.2) 1.87 / 212 / 0.06
Medical Outcomes (MOS/RAND12)
(range 0–100, higher better)
  Physical 39.6 (11.7) 43.9 (11.5) 2.51 / 199 / 0.02
  Mental 46.4 (10.3) 47.0 (9.8) 0.42 / 199 / 0.68
Late Life Functional Disability Instrument
(range 0–100, higher better)
  Frequency (“does do”) 56.3 (9.5) 58.5 (8.0) 1.61 / 171 / 0.11
  Limitation (“can do”) 60.2 (13.6) 64.7 (11.1) 2.41 / 171 / 0.02
PSYCHIATRIC AND PSYCHOLOGICAL STATUS
History of MDD, % 29 36 0.8:1 1.11 / 1 / 0.29
CES-D 22.1 (8.2) 20.7 (7.8) 1.17 / 209 / 0.24
Hamilton Rating Scale (HRSD-17) 12.1 (3.6) 10.8 (3.8) 2.38 / 209 / 0.02
Chronic insomnia, % 64 59 1.1:1 0.53 / 1 / 0.47
Pittsburgh Sleep Quality Inventory
(range = 0–21, higher = worse) 8.8 (3.4) 7.7 (3.6) 2.26 / 200 / 0.03
Anxiety disorder, % 33 27 1.2:1 0.85 / 1 / 0.36
Brief Symptom Inventory 0.48 (0.47) 0.54 (0.51) 0.84 / 203 / 0.40
(range = 0–4, higher = worse)
History of alcohol/drug abuse, % 25 10 2.5:1 8.74 / 1 / 0.003
Social Problem Solving Inventory
(range 0–120, higher scores are better)
  Total (scaled score) 106.0 (13.1) 103.7 (13.4) 1.10 / 185 / 0.27
Positive Problem Orientation (scaled score) 102.0 (15.6) 98.6 (15.9) 1.45 / 200 / 0.15
COGNITIVE STATUS
MMSE 27.3 (1.7) 28.8 (1.3) 6.68 / 209 / 0.0001
EXIT 7.7 (4.4) 6.1 (4.1) 2.57 / 185 / 0.02
Mean number of risk factors per subject 4.3 (1.7) 3.5 (1.7) 3.32 / 213 / 0.001

Bold indicates main risk factor.

MDD = major depressive disorder; CES-D = Center for Epidemiological Studies Depression Scale; MMSE = Mini-mental State Examination; EXIT = Executive Interview