Application of data mining techniques and logistic regression to model drug use transition to injection: a case study in drug use treatment centers in Kermanshah Province, Iran

Table 4 Mean and standard deviation of total accuracy, sensitivity, specificity, positive likelihood ratio, negative likelihood ratio and Kappa statistic for DT, NN, SVM and LR

Models	Total accuracy		Sensitivity		Specificity		Positive likelihood ratio		Negative likelihood ratio		Kappa
Models	Mean	Std. dev	Mean	Std. dev	Mean	Std. dev	Mean	Std. dev	Mean	Std. dev	Kappa
Decision tree	0.82	0.043	0.76	0.027	0.86	0.025	25.27	12	0	0	0.87
Neural network	0.83	0.02	0.87	0.031	0.84	0.021	17	7.67	0.027	0.03	0.79
Support vector machine	0.91	0.01	0.94	0.017	0.90	0.022	35	15	0	0	0.94
Logistic regression	0.65	0.025	0.74	0.095	0.85	0.026	5.78	1.18	0.19	0.09	0.48