Table 1 Comparison of Baseline Characteristics.
From: Exploring the Association between Serum BDNF and Attempted Suicide
Cases (n = 84) | Psychiatric controls (n = 104) | Community controls (n = 93) | Univariate differences1 | |
|---|---|---|---|---|
Demographic Variables | ||||
Mean Age (SD) (years) | 43.01 (14.03) | 45.01 (14.23) | 46.36 (17.81) | F = 1.05, P = 0.35 |
Sex (% female) | 44 (52.38) | 52 (50.00) | 46 (49.46) | χ2 = 0.17, P = 0.92 |
Completed secondary education (%) | 35 (42.68) | 51 (50.49) | 69 (74.19) | χ2 = 19.53, P < 0.001 |
Currently employed (%) | 22 (26.51) | 33 (32.67) | 55 (59.14) | χ2 = 22.80, P < 0.001 |
Marital status | χ2 = 24.20, P < 0.001 | |||
Never married (%) | 27 (32.53) | 43 (41.75) | 28 (30.11) | |
Married/common law (%) | 21 (25.30) | 31 (30.10) | 50 (53.76) | |
Widowed/separated/divorced (%) | 35 (42.17) | 29 (28.16) | 15 (16.13) | |
Prognostic Factors | ||||
Currently smoking (%) | 35 (43.21) | 35 (35.35) | 11 (11.83) | χ2 = 22.84, P < 0.001 |
Taking antidepressants (%) | 40 (47.61) | 32 (30.77) | 14 (15.05) | χ2 = 22.04, P < 0.001 |
Mean serum BDNF (SD) (ng/ml) | 24.21 (7.19) | 23.88 (6.95) | 24.77 (7.19) | F = 0.297, P = 0.59 |
Mean body mass index (SD) (kg/m2) | 27.88 (7.28) | 29.78 (9.80) | 27.73 (6.18) | F = 0.045, P = 0.83 |
Psychiatric Diagnoses 2 | ||||
Major depressive disorder (%) | 42 (63.63) | 38 (41.30) | 20 (21.74) | χ2 = 28.21, P < 0.001 |
Mood disorder (%) | 63 (95.45) | 76 (82.60) | 26 (28.26) | χ2 = 95.22, P < 0.001 |
Anxiety disorder (%) | 43 (65.15) | 49 (53.26) | 9 (9.78) | χ2 = 58.93, P < 0.001 |
Alcohol abuse (%) | 18 (27.27) | 13 (14.13) | 4 (4.35) | P < 0.001 |
Substance abuse (%) | 11 (16.67) | 11 (11.96) | 2 (2.17) | P = 0.003 |
Eating disorder (%) | 5 (75.76) | 5 (5.43) | 1 (1.09) | P = 0.11 |
Psychotic disorder (%) | 3 (4.55) | 6 (6.52) | 0 (0) | P = 0.024 |
Antisocial personality disorder (%) | 15 (22.73) | 0 (0) | 2 (2.17) | P < 0.001 |
