Practical Minimum Sample Size for Road Crash Time-Series Prediction Models

Table 2

Prediction models based on different sample sizes (number of years).

Sample size (years)
Country	45 (1971–2015)	35 (1981–2015)	25 (1991–2015)	15 (2001–2015)
Denmark
Turkey	Model 1	Model 2	Model 3	Model 4
Germany
Israel