OBJECTIVES: There is a long standing theory, suggested  that  there are personality traits, which in combination coping strategies and biomedical factors can predict cancer or coronary heart disease in healthy probands (Hansen, Floderus, Fredriksen, Johansen et. al, 2005). The authors of the Personality/Stress Questionnaire has suggested that can predict cancer or CHD in healthy probands in 81% accuracy (Grossarth-Maticek, Eysenck, Boyle, 1991, 1995). We tested the hypothesis that personality plays a role in cancer or CHD onset in a potentially healthy population.

METHODS:  From the global healthy probands sample (n= 1 087 (both sexes) we were selected (N=131) men and women in polish population, aged 24-65 completed the “Personality/Stress” Questionnaire. The Classification Trees Module with two algorithms CART (Classification and Regression Trees) the Discriminant Analysis and Logistic Regression (STATISTICA PL) was used for analysis.

RESULTS: MULTIVARIATE ANALYSIS:

The CLASSIFICATION OF THE TREES ANALYSIS for the “PERSONALITY/STRESS” QUESTIONNAIRE, showed that in 80, 15%, we can classify people in terms of belonging to  one from four types correctly (TYPE I-cancer prone; TYPE II-CHD prone; TYPE III- ambivalence and TYPE IV-autonomous, healthy). Based on the importance ranking of predictors TYPE II (open behavior pattern, CHD-prone) = 100 (was a most ranged predictors); TYPE I VARIABLE (withdrawing) = 93; Type III (ambivalent) = 77 Type IV (healthy, autonomous) = 95.

LOGISTIC REGRESSION for the “PERSONALITY/STRESS” QUESTIONNAIRE:
Values ​​of Chi-square statistics were significant at: p=.00712; Constant value (BO) = -0,429;  X2 (7) = 10,368; SD=1,321; T= -0,325. The largest share of the variability have TYPE II (open behavior pattern, CHD prone) which informs us of the fact that the studied group of people, is determined to open behavior pattern in a stressful situation, but still prone to the incidence of cardiovascular disease. In this population based on the potentially healthy probands using with the "Personality / Stress" Questionnaire can predict with 68.7% accuracy.

 DISCRIMINANT ANALYSIS
In the current case, the hypothesis was rejected at a significance level of p <0.01, and its approximation using the F-statistic, is - 0.862955616. The values ​​of the lambda Wilks' statistics are L=0,862945616 ; Chi 2 (square)= 18,49915123; DF=0,00992455; level of significance (p=0,00992455). Based on standardized discriminatory coefficients for the "Personality / Stress" Questionnaire found that the greatest power in the discriminant model has a variable - Type II (open pattern of behavior); for it the partial lambda L was smallest (Y(x)=-.209). Discriminative power of the model can be described as a moderate; it can be expected given the personality type and reaction to stress factors in 97,11% predictive accuracy.

 CONCLUSIONS: The findings suggest that The Personality/Stress Questionnaire is an appropriate and effective method for eliciting peoples for one of four types` personality and coping strategies. But such studies should be carried out on a large number of peoples (longitudinal and follow-up study), having regard to the cultural differences and biomedical factors.