Table 2. Mean and standard deviation (SD) of NEO-PI-R normalized scores in the participants of the study.
| European American Population | |||||
| Mean (Standard Deviation) score of | |||||
| Neuroticism | Extraversion | Openness to experience | Agreeableness | Conscientiousness | |
| CD Cases | 60.15 (9.63) | 48.60 (9.61) | 47.63 (9.12) | 41.20 (10.38) | 38.77 (10.81) |
| CD Controls | 51.51 (11. 12) | 50.92 (10.45) | 50.69 (10.07) | 47.89 (12.29) | 46.96 (12.30) |
| ND Cases | 59.99 (9.51) | 48.22 (9.49) | 47.71 (9.21) | 51.29 (10.63) | 38.69 (10.75) |
| ND Controls | 48.61 (10.59) | 52.21 (10.66) | 51.39 (10.15) | 50.49 (11.79) | 50.28 (11.72) |
| CD cases without CIP | 58.18 (9.84) | 48.64 (9.78) | 47.36 (8.99) | 42.13 (9.98) | 39.29 (11.08) |
| CD cases with CIP | 61.08 (9.39) | 48.58 (9.54) | 47.75 (9.19) | 40.76 (10.55) | 38.53 (10.68) |
| CIP Controls (no CD and no CIP) | 48.61 (10.59) | 52.21 (10.66) | 51.39 (10.14) | 50.49 (11.79) | 50.28 (11.72) |
CD = cocaine dependence, ND = nicotine dependence, CIP = cocaine induced paranoia.