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. Author manuscript; available in PMC: 2022 Feb 15.
Published in final edited form as: J Affect Disord. 2020 Nov 16;281:623–630. doi: 10.1016/j.jad.2020.11.101

TABLE 1. Sociodemographic and Clinical Characteristics of Sample.

This table highlights key demographic variables and co-occurring mental disorders in this sample stratified by diagnosis of a bipolar disorder or major depressive disorder. Significant differences by diagnostic grouping are highlighted in bold.

Total (N=6105) Bipolar Disorder (n=988) Major Depression (n=5117)
n(%) n(%) n(%) χ2 p-value
Age Category <0.001
Less than 30 years old 1889 (30.9%) 257 (26.0%) 1632 (31.9%)
30–39 years old 1362 (22.3%) 225 (22.8%) 1137 (22.2%)
40–49 years old 984 (16.1%) 158 (16.0%) 826 (16.2%)
50–59 years old 963 (15.8%) 190 (19.2%) 773 (15.1%)
60 years old or older 907 (14.9% 158 (16.0%) 749 (14.6%)
Sex (missing = 42) (missing = 15) (missing = 27) 0.03
Female 3985 (65.7%) 605 (62.2%) 3380 (66.4%)
Male 2075 (34.2%) 367 (37.7%) 1708 (33.6%)
Other 3 (0.1%) 1 (0.1%) 2 (0.04%)
Race (missing = 40) (missing = 7) (missing = 33) 0.15
American India /Alaskan Native 35 (0.6%) 8 (0.8%) 27 (0.5%)
Asian/Asian American 126 (2.1%) 18 (1.8%) 108 (2.1%)
Black or African American 451 (7.4%) 68 (6.9%) 383 (7.5%)
Native Hawaiian/Pacific Islander 7 (0.1%) 3 (0.3%) 4 (0.1%)
White 5160 (85.1%) 846 (86.3%) 4314 (84.9%)
Other 230 (3.8%) 34 (3.5%) 196 (3.9%)
Unknown 56 (0.9%) 4 (0.4%) 52 (1.0%)
Married (missing=230) (missing = 29) (missing = 201) <0.001
Single 2583 (44.0%) 354 (36.9%) 2229 (45.3%)
Committed Relationship 418 (7.1%) 81 (8.4%) 337 (6.9%)
Married 2058 (35.0%) 366 (38.2%) 1692 (34.4%)
Divorced 572 (9.7%) 110 (11.5%) 462 (9.4%)
Separated 132 (2.2%) 28 (2.9%) 104 (2.1%)
Widowed 112 (1.9%) 20 (2.1%) 92 (1.9%)
Comorbidities
Generalized Anxiety Disorder 1482 (24.3%) 113 (11.4%) 1369 (26.7%) <0.001
Obsessive-Compulsive Disorder 127 (2.1%) 12 (1.2%) 115 (2.2%) 0.04
Panic Disorder 214 (3.5%) 19 (1.9%) 195 (3.8%) 0.003
Phobic Disorder 233 (3.8%) 24 (2.4%) 209 (4.1%) 0.01
Reaction to Severe Stress/Adjustment Disorders 561 (9.2%) 62 (6.3%) 499 (9.7%) <0.001
Other Anxiety Disorder 766 (12.5%) 77 (7.8%) 689 (13.5%) <0.001
Substance Abuse Disorder 475 (7.8%) 78 (7.9%) 397 (7.7%) 0.88