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. 2011 Jan 26;261(5):341–347. doi: 10.1007/s00406-010-0187-x

Table 3.

Demographics of patients with 4 day hypomanic episodes compared to additional patients with 3, 2, and 1 day hypomanic episodes

4 day hypomanic episode 3 day hypomanic episode 2 day hypomanic episode 1 day hypomanic episode
Patients (N = 102) Additional patients (N = 43) DF P Additional patients (N = 88) DF P Additional patients (N = 169) DF P
Agea (mean years, SD) 38.9 (11.9) 40.4 (9.0) 103.1 0.400 39.5 (11.0) 187.1 0.687 39.8 (11.3) 204.9 0.524
Age of onseta (mean years, SD) 23.8 (11.3) 20.1 (10.3) 79.9 0.068 20.6 (10.9) 169.2 0.054 21.4 (10.7) 188.7 0.102
Years of illnessa (mean years, SD) 15.5 (10.7) 20.0 (10.8) 73.1 0.032 19.0 (12.2) 158.4 0.050 18.4 (12.6) 221.1 0.054
Hospitalizationsa (mean N, SD) 2.8 (5.0) 2.5 (3.1) 120.4 0.548 1.8 (2.5) 137.2 0.079 1.9 (2.8) 125.1 0.075
Diagnosisb 2 0.279 1 0.650 1 0.925
 Bipolar I (N, %) 64 (63) 31 (72) 58 (66) 107 (63)
 Bipolar II (N, %) 38 (37) 12 (28) 30 (34) 62 (37)
Genderb 1 0.423 1 0.705 1 0.570
 Female (N, %) 71 (70) 27 (63) 59 (67) 112 (66)
 Male (N, %) 31 (30) 16 (37) 29 (33) 57 (34)
Education levelb 2 0.544 2 0.736 2 0.423
 High school (N, %) 13 (14) 3 (8) 9 (11) 18 (11)
 Some college (N, %) 35 (38) 15 (37) 29 (35) 51 (32)
 College graduate (N, %) 45 (48) 22 (55) 44 (54) 91 (57)
Employment statusb 2 0.169 2 0.030 2 0.103
 Disabled (N, %) 21 (24) 11 (28) 20 (25) 37 (23)
 Working full-time (N, %) 51 (59) 17 (42) 33 (41) 75 (48)
 Other (N, %) 15 (17) 12 (30) 27 (34) 46 (29)
Marital statusb 2 0.928 2 0.928 2 0.927
 Married (N, %) 45 (48) 20 (50) 36 (46) 78 (49)
 Single (N, %) 34 (37) 15 (37) 30 (38) 59 (37)
 Divorced (N, %) 14 (15) 5 (13) 13 (16) 21 (13)
Number of daily medicationsa (mean N, SD) 2.8 (1.6) 2.7 (1.4) 86.8 0.769 2.6 (1.6) 184.7 0.310 2.6 (1.5) 206.3 0.183
Taking any mood stabilizerb (N, %) 80 (78) 36 (84) 1 0.467 69 (78) 1 0.997 133 (79) 1 0.959
Taking lithiumb (N, %) 30 (29) 11 (26) 1 0.640 20 (23) 1 0.297 40 (24) 1 0.295
Taking valproateb (N, %) 24 (24) 11 (26) 1 0.792 20 (23) 1 0.896 34 (20) 1 0.507
Taking lamotrigineb (N, %) 34 (33) 14 (33) 1 0.928 29 (33) 1 0.956 64 (38) 1 0.451
Taking antidepressantb (N, %) 50 (49) 23 (54) 1 0.623 44 (50) 1 0.893 86 (51) 1 0.766
Taking antipsychoticb (N, %) 54 (53) 17 (40) 1 0.140 33 (38) 1 0.033 66 (39) 1 0.026
Taking benzodiazepineb (N, %) 27 (27) 11 (26) 1 0.911 20 (23) 1 0.551 35 (21) 1 0.274
Taking sleep medicationb (N, %) 10 (10) 3 (7) 1 0.586 5 (6) 1 0.293 8 (5) 1 0.104

aStudent’s t test, equal variances not assumed

bPearson Chi-Square test