Table 1 Sociodemographic and clinical characteristics between RCBD and NRCBD. Significance with Bonferroni correction requires p < 0.0012 (0.05/41)
Variables | Total (n = 520) | RCBD (n = 49) | NRCBD (n = 471) | t/Z/χ2 | P |
|---|---|---|---|---|---|
Sociodemographic characteristics | |||||
 Gender (male) | 252(48.46) | 20(40.82) | 232(49.26) | 1.2660 | 0.2605 |
 Age (years) | 35.65 ± 13.23 | 34.29 ± 13.00 | 35.80 ± 13.26 | − 0.76 | 0.4499 |
 Education (years) | 13.10 ± 3.40 | 13.18 ± 3.52 | 13.09 ± 3.39 | 0.19 | 0.8519 |
 Occupational status |  |  |  | 0.4617 | 0.7939 |
  Permanent employment | 221(42.50) | 22(44.90) | 199(42.25) |  |  |
  Temporary employment | 69(13.27) | 5(10.20) | 64(13.59) |  |  |
   Unemployed | 230(44.23) | 22(44.90) | 208(44.16) |  |  |
 Residential status |  |  |  | – | 0.5790 |
  Living alone | 42(8.08) | 5(10.20) | 37(7.86) |  |  |
  Cohabitation | 478(91.92) | 44(89.80) | 434(92.14) |  |  |
 Lifetime clinical characteristics | |||||
 Substance abuse | 36(6.92) | 2(4.08) | 34(7.22) | – | 0.5620 |
 Family history of mental disorders | 151(29.04) | 16(32.65) | 135(28.66) | 0.3430 | 0.5581 |
Bipolar type | Â | Â | Â | 0.7280 | 0.3935 |
  Type I | 399(76.73) | 40(81.63) | 359(76.22) |  |  |
  Type II | 121(23.27) | 9(18.37) | 112(23.78) |  |  |
 Age at onset (years) | 30.39 ± 12.21 | 31.01 ± 13.11 | 30.32 ± 12.12 | 0.38 | 0.7059 |
 Age at diagnosis (years) | 32.28 ± 12.46 | 31.61 ± 13.0 | 32.35 ± 12.41 | − 0.40 | 0.6930 |
 Time from first psychiatric consultation to diagnosis of BD (years) (Mean ± SD) | 3.46 ± 6.13 | 2.46 ± 6.81 | 3.57 ± 6.05 | 5.0762 | 0.0243 |
 Psychiatric diagnosis prior BD |  |  |  | 4.4707 | 0.2149 |
  Major depressive disorder | 227(43.65) | 24(48.98) | 203(43.10) |  |  |
  Schizophrenia | 84(16.15) | 3(6.12) | 81(17.20) |  |  |
  Anxiety Disorder | 39(7.50) | 3(6.12) | 36(7.64) |  |  |
  Other mental disorders | 170(32.69) | 19(38.78) | 151(32.06) |  |  |
 Polarity of initial episode |  |  |  | – | 0.0775 |
  Manic episode | 172(33.08) | 11(33.08) | 161(22.45) |  |  |
  Hypomanic episode | 19(3.65) | 2(4.08) | 17(3.61) |  |  |
  Depressive episode | 307(59.04) | 31(63.27) | 276(58.60) |  |  |
  Mixed episode | 22(4.23) | 5(10.20) | 17(3.61) |  |  |
  Psychotic feature | 217(41.73) | 18(36.73) | 199(42.25) | 0.5553 | 0.4562 |
 Longest duration of euthymia post-diagnosis (days) (n = 247) | 882.38 ± 1318.71 | 573.85 ± 841.84 | 918.67 ± 1360.67 | 5.6006 | 0.0180 |
 Lifetime hospitalization history due to BD | 415(79.81) | 32(65.31) | 383(81.32) | 7.0596 | 0.0079 |
 Lifetime number of hospitalizations due to BD | 1.92 ± 1.51 | 1.91 ± 1.55 | 1.92 ± 1.51 | 0.4041 | 0.5250 |
 Lifetime suicide attempts | 54(10.38) | 8(16.33) | 46(9.77) | 2.0524 | 0.1520 |
 Number of lifetime suicide attempts | 0.17 ± 0.67 | 0.29 ± 0.84 | 0.15 ± 0.64 | 0.7547 | 0.3850 |
Clinical characteristics in the past 12Â months | Â | ||||
 Number of episodes in the last 12 months (Mean ± SD) |  |  |  |  |  |
  Manic episode | 0.30 ± 0.75 | 1.22 ± 1.79 | 0.20 ± 0.43 | 21.4834 |  < 0.001 |
  Hypomanic episode | 0.73 ± 1.04 | 1.73 ± 2.44 | 0.63 ± 0.69 | 14.98 |  < 0.001 |
  Depressive episode | 1.03 ± 1.07 | 2.63 ± 2.21 | 0.86 ± 0.69 | 71.65 |  < 0.001 |
  Mixed episode | 0.15 ± 0.61 | 0.63 ± 1.65 | 0.10 ± 0.31 | 17.09 |  < 0.001 |
 Total number of episodes in the last 12 months (Mean ± SD) | 2.22 ± 1.91 | 6.24 ± 4.01 | 1.80 ± 0.71 | 150.7186 |  < 0.001 |
 Hospitalization history due to BD in the past 12 months | 348(66.92) | 27(55.10) | 321(68.51) | 3.4150 | 0.0646 |
 Number of hospitalizations due to BD in the past 12 months | 1.23 ± 0.53 | 0.97 ± 0.59 | 1.04 ± 0.67 | 0.4083 | 0.5228 |
 Suicide attempts in the past 12 months | 32(6.15) | 5(10.20) | 27(5.73) | - | 0.2107 |
 Number of suicide attempts in the past 12 months | 0.08 ± 0.35 | 0.18 ± 0.75 | 0.06 ± 0.27 | 0.2603 | 0.6099 |