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author:("worry, G A")
1.  Predicting the response time of an urban ambulance system. 
Health Services Research  1978;13(4):404-417.
Response time, i.e., the time from dispatch of an ambulance to its arrival at the scene of an emergency, is an important measure of performance in an urban ambulance system. We developed a model that predicts the entire distribution of response time, explicitly accounting for the rate and spatial distribution of demand, variable ambulance velocities, and queueing effects. We tested the model using data sampled from 3,936 ambulance runs in Houston and achieved close agreement between empirical and predicted distributions of response time. Our use of probability theory to predict response times yielded a model that complements those previously reported for planning and evaluating urban ambulance systems.
PMCID: PMC1072082  PMID: 738897
2.  Cost-effectiveness of cardiopulmonary resuscitation training programs. 
Health Services Research  1977;12(1):30-41.
A model is presented to analyze the cost-effectiveness of programs to train large numbers of citizens in the techniques of cardiopulmonary resuscitation (CPR). From a planner's estimates of certain key factors, the model determines the probability of intervention for various numbers of trained citizens and for several allocation strategies and patterns of population density. These key factors are the maximum distance from which a person with CPR training could intervene in an emergency, the cost of training, and loss of skill with time. The model is used to analyze possible training efforts in Houston, Texas.
PMCID: PMC1071956  PMID: 406223

Results 1-2 (2)