Prospective Study
Copyright ©The Author(s) 2015.
World J Cardiol. Apr 26, 2015; 7(4): 215-223
Published online Apr 26, 2015. doi: 10.4330/wjc.v7.i4.215
Table 1 Summary of demographic biological, social, and psychological characteristics of depressed post-myocardial infarction patients treated for depression and comparison of those with treatment resistant and non treatment resistant depression (n = 770) n (%)
CharacteristicsTreated DepressedPost-MI1TRDn = 1031Non TRDn = 6671
Demographics and biological characteristics
Age, mean (SD), yr59.2 (12.0)57.0 (11.7)59.5 (12.0)t = -2.07, P = 0.04
Gender, female365 (47.4)59 (57.3)306 (45.9)χ2 (1) = 4.65, P = 0.031
Ethnicity, minority239 (31.0)32 (31.1)207 (31.0)χ2 (1) = 0.0, P = 0.995
Education:χ2 (2) = 3.76, P = 0.153
Basic or no HS degree187 (24.3)25 (24.3)162 (24.3)
HS without college degree419 (54.4)64 (62.1)355 (53.2)
Advanced education146 (19.0)13 (12.6)133 (19.9)
Body mass index, mean (SD)29.2 (6.1)29.7 (6.3)29.2 (6.1)t = 0.77, P = 0.444
Diabetes264 (34.3)42 (40.8)222 (33.3)χ2 (1) = 2.41, P = 0.120
History of heart failure101 (13.1)17 (16.5)84 (12.6)χ2 (1) = 1.28, P = 0.258
Hypertension458 (59.5)70 (68.0)388 (58.2)χ2 (1) = 4.56, P = 0.033
Prior MI187 (24.3)22 (21.4)165 (24.7)χ2 (1) = 0.41, P = 0.524
Prior stroke70 (9.1)13 (12.9)57 (8.7)χ2 (1) = 1.80, P = 0.180
Current smoker254 (33.0)46 (44.7)208 (31.2)χ2 (1) = 7.34, P = 0.007
Social characteristics
Live alone322 (41.8)46 (44.7)276 (41.4)χ2 (1) = 0.32, P = 0.570
Social support356 (46.2)54 (52.4)302 (45.3)χ2 (1) = 1.84, P = 0.176
Psychological characteristics
Depressionχ2 (2) = 16.7, P > 0.001
Major depression398 (51.7)69 (67.0)329 (49.3)
Minor depression348 (45.2)28 (27.2)320 (48.0)
Dysthymia24 (3.1)6 (5.8)18 (2.7)
Psychosocial measures
Baseline Depression Symptom Severity (BDI), mean (SD)17.7 (7.8)22.4 (9.3)17.0 (7.4)t = 6.62, P < 0.001
Baseline Perceived Social Support (ESSI), mean (SD)24.5 (6.4)22.9 (7.0)24.7 (6.3)t = -2.74, P = 0.006
Baseline Depression Symptom (HAM-D), mean (SD)17.9 (6.3)20.9 (6.5)17.4 (6.1)t = 5.07, P < 0.001