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Table 1 Descriptive data for the study populations with BD I, BD II, BD NOS and the combined population

From: Regional lithium prescription rates and recurrence in bipolar disorder

  BD I (n = 5618) BD II (n = 5574) NOS (n = 3424) Total (n = 14,616)
Age years, mean (SD) 52.9 (15.8) 46.4 (16.0) 50.1 (16.4) 49.8 (16.3)
Gender (female), n (%) 3211 (57.2) 3799 (68.2) 2202 (64.3) 9212 (63.0)
Education, n (%)
 Less than high school 764 (13.6) 537 (9.6) 466 (13.6) 1767 (12.1)
 Graduated high school 1158 (20.6) 992 (17.8) 633 (18.5) 2783 (19.0)
 Graduated college or higher 1240 (22.1) 1102 (19.8) 560 (16.4) 2902 (19.9)
 Missing data 2456 (43.7) 2943 (52.8) 1765 (51.5) 7164 (49.0)
BMI, mean (SD), missing 27.7 (5.4), 359 27.2 (5.7), 232 28.0 (5.7), 230 27.6 (5.6)
Psychiatric comorbidity, n (%)
 Any comorbidity 1137 (20.2) 1859 (33.4) 1178 (34.4) 4174 (28.6)
 Substance abuse or addiction 226 (4.0) 196 (3.5) 140 (4.1) 562 (3.8)
 Anxiety disorder 302 (5.4) 646 (11.6) 310 (9.1) 1258 (8.6)
 Personality disorder 83 (1.5) 221 (4.0) 160 (4.7) 464 (3.2)
Mood stabilizers, n (%)
 Any mood stabilizers 4895 (87.1) 4610 (82.7) 2750 (80.3) 12255 (83.8)
 Lithium 3664 (65.2) 2333 (41.9) 1667 (48.7) 7664 (52.4)
 Lamotrigine 937 (16.7) 2242 (40.2) 924 (27.0) 4103 (28.1)
 Valproate 712 (12.7) 382 (6.9) 275 (8.0) 1369 (9.4)
 Carbamazepine 102 (1.8) 454 (0.8) 41 (1.2) 188 (1.3)
Neuroleptics, n (%) 2692 (47.9) 1837 (33.0) 1267 (37.0) 5796 (39.7)
Antidepressants, n (%) 1952 (34.7) 2920 (52.4) 1633 (47.7) 6505 (44.5)
Episode (at least one episode last 12 months), n (%), missing
 Any episode 2665 (47.4) 3614 (64.8) 1830 (53.4) 8109 (55.5)
 Depressive episode 2041 (36.4), 11 3275 (58.8), 8 1603 (47.0), 12 6919 (47.4), 31
 Manic episode 719 (12.9), 26 110 (2.0), 30 141 (4.1), 20 970 (6.7), 76
 Hypomanic episode 1147(20.5), 20 1814 (32.6), 17 738 (21.7), 18 3699 (25.4), 55
 Mixed episode 497 (8.9), 62 746 (13.4), 27 425 (12.5), 12 1668 (11.5), 101