Clinical Characteristics of Entire Study Group and TID-Positive and TID-Negative Subgroups
| Variable | Entire study group (n = 203) | TID negative (n = 184 [91%]) | TID positive (n = 19 [9%]) | P |
| Age (y) | 60 ± 12 | 59 ± 12 | 64 ± 11 | Not significant |
| Sex | ||||
| Men | 90 (44) | 79 (43) | 11 (58) | Not significant |
| Women | 113 (56) | 105 (57) | 8 (42) | Not significant |
| Race | ||||
| Black | 126 (62) | 117 (63) | 9 (47) | Not significant |
| White | 68 (34) | 60 (33) | 8 (42) | Not significant |
| Other | 9 (4) | 7 (4) | 2 (11) | Not significant |
| Body mass index (kg/m2) | 31.9 ± 8.9 | 32.3 ± 9.1 | 28.4 ± 6.7 | Not significant |
| History of… | ||||
| Smoking | 71 (35) | 66 (36) | 5 (26) | Not significant |
| Hypertension | 134 (66) | 118 (64) | 16 (84) | Not significant |
| Hyperlipidemia | 100 (49) | 89 (48) | 11 (58) | Not significant |
| Diabetes mellitus | 75 (37) | 68 (37) | 7 (37) | Not significant |
| Cardiac history | ||||
| None | 99 (49) | 92 (50) | 7 (37) | Not significant |
| CAD | 74 (36) | 62 (34) | 12 (63) | <0.03 |
| Prior MI | 29 (14) | 24 (13) | 5 (26) | Not significant |
| Prior percutaneous coronary interventions or coronary artery bypass grafts | 41 (20) | 33 (18) | 8 (42) | <0.03 |
| Heart failure | 7 (3) | 7 (4) | — | Not significant |
| Other | 44 (22) | 42 (23) | 2 (11) | Not significant |
| Obstructive CAD | ||||
| CTA | 9/51 (18) | 5/45 (11) | 4/6 (67) | <0.006 |
| Catheterization | 28/35 (79) | 23/30 (76) | 5/5 (100) | Not significant |
| CTA or catheterization | 33/81 (41) | 26/72 (36) | 7/9 (78) | <0.05 |
| Medication at PET | ||||
| β-blocker | 40 (20) | 36 (20) | 4 (21) | Not significant |
| Angiotensin-converting enzyme inhibitor or sartan | 44 (22) | 42 (23) | 2 (11) | Not significant |
| Statin | 43 (21) | 39 (21) | 4 (21) | Not significant |
Data in parentheses are percentages.
NS = not significant.