Influence of Environmental Factors on Injury Severity Using Ordered Logit Regression Model in Limpopo Province, South Africa

Table 1

Data categories and variables used in the study.

Variables	Description	Values
Severity level	Injury severity	1 = property damage; 2 = minor injury; 3 = serious injury; 4 = deaths
Day of week	One of the seven days in a week	1 = Monday 2 = Tuesday; 3 = Wednesday 4 = Thursday; 5 = Friday 6 = Saturday; 7 = Sunday
District	Municipal district	1 = Capricorn; 2 = Vhembe; 3 = Mopani; 4 = Greater Sekhukhune; 5 = Waterberg
Season	Season	1 = autumn; 2 = spring; 3 = summer; 4 = winter
Road type	Categorized road type	1 = regional; 2 = district; 3 = national; 4 = others
Time	Categorized time intervals	1 = 00:00–05:59; 2 = 00:06–13:59; 3 = 14:00–23:59