Table 3.
Clinical severity among respondents with 12-month DSM-IV/CIDI bipolar disorder (BPD)
| Any BPD | BP-I | BP-II | Sub-threshold BPD | ||||||
|---|---|---|---|---|---|---|---|---|---|
| % | (se) | % | (se) | % | (se) | % | (se) | χ221 | |
| I. Manic/hypomanic episode2 | |||||||||
| Severe | 45.6 | (3.5) | 70.2 | (8.7) | 55.4 | (7.0) | 31.5 | (4.7) | 17.6* |
| Moderate | 44.4 | (4.3) | 24.4 | (8.1) | 31.9 | (7.0) | 58.1 | (5.3) | 1.1 |
| Mild | 8.0 | (2.3) | 5.4 | (3.9) | 9.2 | (4.1) | 8.3 | (3.6) | 311.3* |
| None | 2.1 | (1.1) | 0.0 | (0.0) | 3.5 | (3.3) | 2.1 | (1.3) | - |
| (n)3 | (219) | (52) | (60) | (107) | |||||
| II. Major depressive episode4 | |||||||||
| Severe | 69.5 | (5.5) | 70.5 | (8.1) | 84.0 | (5.9) | 46.4 | (9.9) | 13.4* |
| Moderate | 27.7 | (5.3) | 21.8 | (7.9) | 14.8 | (5.6) | 53.6 | (9.9) | 209.3* |
| Mild | 2.8 | (1.4) | 7.6 | (4.2) | 1.2 | (1.2) | 0.0 | (0.0) | -6 |
| None | 0.0 | (0.0) | 0.0 | (0.0) | 0.0 | (0.0) | 0.0 | (0.0) | - |
| (n)3 | (152) | (43) | (60) | (49) | |||||
| III. Combined2,5 | |||||||||
| Severe | 58.4 | (3.5) | 70.3 | (7.7) | 79.2 | (5.7) | 40.3 | (4.7) | 19.1* |
| Moderate | 37.1 | (4.1) | 21.4 | (7.4) | 18.0 | (5.1) | 55.9 | (5.2) | 1.8 |
| Mild | 4.2 | (1.6) | 8.2 | (4.8) | 2.9 | (1.6) | 3.2 | (2.2) | 295.9* |
| None | 0.3 | (0.3) | 0.0 | (0.0) | 0.0 | (0.0) | 0.6 | (0.6) | - |
| (n)3 | (262) | (65) | (74) | (123) | |||||
Significant difference across the three BPD subgroups at the .05 level, two-sided test
Significance tests were carried out for cumulative categories. In the case of moderate severity, the BPD subgroups were compared for prevalence of severe or moderate. In the case of mild severity, the BPD subgroups were compared for prevalence of any severity (i.e., severe, moderate or mild) versus none. No significance tests are presented for the final category (None) because of this cumulative coding.
Based on the Young Mania Rating Scale (YMRS)22
Number of 12-month cases of mania/hypomania (I), major depressive episode among people with 12-month BPD (II), and any 12-month BPD (III) in the sample
Based on the Quick Inventory of Depressive Symptoms Self-Report version (QIDS-SR)23
Respondents who reported both manic/hypomanic and depressive episodes in the past year were assigned the more severe of their two severity scores.
No respondents were classified mild.