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A Proportional Hazards Regression Analysis of Employee Turnover Among Nurses in New Zealand

Fiona Cram

Lesley Jenkins

Psychology Department, University of Otago, P.O. Box 56, Dunedin, New Zealand.

Research on employee turnover has usually relied on employment status (quitters vs. stayers) to index the criterion variable (turnover), and on multiple regression (MR) to model the turnover process. In the present study, which was based on a national sample of nurses in New Zealand (n = 1249), we improved the criterion variable by combining employment status with a continuous measure, namely, job survival duration (length of employment starting from the time of survey). We then applied Cox's (1972) proportional hazards regression (PHR) analysis to the improved criterion, and compared the results with those obtained by applying MR on employment status. The comparisons favored PHR: (1) MR selected an extra predictor of quitting that turned out to be nonsignificant, and (2) the numbers of quitters estimated by PHR tended to be more accurate than those by MR.

Key Words: proportional hazards regression • multiple regression • job attrition • nurses • New Zealand

Human Relations, Vol. 44, No. 12, 1313-1330 (1991)
DOI: 10.1177/001872679104401205


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