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. Author manuscript; available in PMC: 2020 Sep 1.
Published in final edited form as: J Geriatr Psychiatry Neurol. 2019 Sep 22;33(5):250–255. doi: 10.1177/0891988719874116

Table 1.

Differences in older and younger study participants

Variable Older Participants (N) Mean (SD) or N (%) Younger Participants (N) Mean (SD) or N (%) p-value

Gender 40 144
Male 20 (50.0) 38 (26.4) <0.01
Female 20 (50.0) 106 (73.6)

Age Mean (SD) 40 60.28 (3.11) 144 43.82 (8.84) <0.001

Race N (%)
African-American 40 30 (75.0) 144 93 (64.6) 0.38
White 9 (22.5) 41 (28.5)
Other 1 (2.5) 10 (6.9)

Hispanic N (%) 40 0 (0.0) 144 6 (4.2) 0.22

Education (years) Mean (SD) 39 13.28 (2.37) 143 12.5 (2.35) 0.07

Marital status
Single, never married 39 14 (35.9) 144 84 (58.3)
Married/co-habiting 9 (23.1) 18 (12.5) 0.04
Separated/Divorced/Widowed 16 (41.0) 42 (29.2)

Employment N (%)
Employed 39 3 (7.7) 143 16 (11.2)
Unemployed 2 (5.1) 39 (27.3) <0.01
Disabled 33 (84.6) 77 (53.8)
Other 1 (2.6) 11 (7.7)

BD diagnostic type N (%)
BD-I 40 29 (72.5) 142 113 (79.6) 0.23
BD-II 11 (27.5) 29 (20.4)

Age of BD Onset Mean (SD) 40 33.13 (14.12) 142 21.45 (10.49) <0.001

Current comorbid disorders N (%)
Alcohol 37 2 (5.4) 134 16 (11.9) 0.20
PTSD 35 3 (8.6) 125 61 (48.8) <0.001
OCD 39 6 (15.4) 137 19 (13.9) 0.77
Generalized anxiety 39 9 (23.1) 137 33 (24.1) 0.12

No. of psychiatric meds Mean (SD) 40 1.55 (0.78) 144 3.00 (1.95) 0.86

No. of non-psychiatric meds Mean (SD) 40 1.96 (1.92) 144 1.60 (0.88) <0.01

Charlson comobidity index total Mean (SD) 40 0.53 (1.18) 144 0.28 (0.91) 0.98

TRQ for BD medications (past week) (mean, SD) 34 37.25 (29.06) 111 42.97 (30.81) 0.34

TRQ for BD medications (past month) (mean, SD) 34 38.48 (26.31) 112 40.84 (27.51) 0.66

One or more anxiety disorders (N, %) 39 22 (56.4%) 139 109 (78.4%) <0.01

Two or more anxiety disorders (N, %) 39 16 (41.0%) 139 80 (57.5%) 0.05

MADRS (mean, SD) 40 14.93 (8.20) 144 18.87 (8.70) 0.01

CGI (mean, SD) 40 3.08 (1.07) 144 3.47 (0.96) 0.03

YMRS (mean, SD) 40 7.63 (5.38) 144 8.15 (4.98) 0.56

BPRS (mean, SD) 34 34.24 (6.15) 113 35.05 (7.31) 0.56

GAF (mean, SD) 40 61.18 (8.71) 144 59.01 (8.50) 0.16

Drug Composite Score—ASI 40 0.02 (0.04) 140 0.04 (0.06) 0.02

Treatment alliance 27 30.74 (6.56) 84 30.37 (6.22) 0.757

Stigma for Mental Illness Scale 40 61.95 (12.67) 144 69.27 (11.54) 0.001
Alienation 40 13.00 (5.06) 143 14.89 (4.15) 0.017
Stereotype endorsement 40 11.28 (3.23) 144 13.06 (3.24) 0.002
Discrimination 40 9.98 (3.58) 141 12.08 (3.41) 0.001
Social withdrawal 39 12.28 (4.24) 142 14.19 (4.19) 0.013
Resistance 40 15.48 (2.55) 141 15.16 (2.23) 0.450

DAI 40 6.98 (2.34) 144 7.04 (1.73) 0.84

Mann-Whitney U used in non-parametric continuous variables; chi-square in categorical; t-test in normally distributed continuous variables; Fisher’s exact for small N comparisons (i.e. Hispanic)