An interview to measure vital exhaustion .2. Reliability and validity of the interview and correlations of vital exhaustion with personality characteristics

In the previous paper (Meesters and Appels, this issue) we described the development of an interview to measure feelings of vital exhaustion (VE). The current paper presents data on the reliability and the validity of the interview, which is labeled the Maastricht Interview for Vital Exhaustion (MIVE). Correlations with the Type A behavior pattern (TABP) and hostility are also discussed in this paper. The data were collected in a case-control study of 81 males with first MI and 168 healthy neighborhood controls. The interview was found to have a good reliability, Cronbach's alpha being .90 in the case group and .86 in the control group. The kappa coefficient was .95 in the case group and .91 in the control group. The validity was tested by computing the estimated relative risk of VE, controlling for angina pectoris and the classic risk factors. The odds ratio was found to be 8.11 (p<.001). This indicates that the interview makes a valid assessment of the mental precursors of MI. The interview correlated significantly with TABP (structured interview) and two self-report measures of hostility (Cook-Medley Hostility Scale and Buss-Durkee Hostility Inventory). Although the absolute magnitude of the observed odds ratios may be affected to some extent because the interviews were not scored blind, these results clearly suggest that the MIVE is a reliable and valid method to assess VE.