BTS | Table 3 - Definition of Explanatory Variables

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BTS Home > Publications > Journal of Transportation and Statistics > Volume 5 Number 2/3 > Paper 2

Table 3
Definition of Explanatory Variables

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Variable	Definition	Descriptive statistic (N = 4,188)
Male	1 if male; 0 otherwise	54.3%
Young	18 ≤ age ≤ 29	18.8%
Middle	30 ≤ age ≤ 55	54.4%
License	1 if licensed; 0 otherwise	94.4%
Jbfull	1 if employed full time; 0 otherwise	82.6%
Student	1 if student; 0 otherwise	13.4%
Single	1 if single; 0 otherwise	20.1%
SinPar	1 if single parent; 0 otherwise	4.3%
Couple	1 if couple with no children; 0 otherwise	27.8%
Cwkid	1 if couple with children; 0 otherwise	28.1%
Linc	$5,000 ≤ income ≤ $29,999	19.6%
Minc	$30,000 ≤ income ≤ $74,999	43.3%
Hinc	Income ≥ $75,000	22.5%
Drvwk	1 if drive to work; 0 otherwise	67.4%
White	1 if white; 0 otherwise	69.2%
CGC	1 if no. cars ≥ no. commuters in hhld	86.4%
Const	Constant
IV	Inclusive value parameter for nest
Eat-meal	Eat-meal activity
Shp/PB	Shopping/personal business/serve child activity
Ent	Entertainment/social recreation
Return home	Return home trip
Before work	Activity undertaken before work start
At work	Activity undertaken during work
After work	Activity undertaken after work end

Note: The descriptive statistics presented here are derived from a sample of 4,188 commuters who provided complete information on all variables included in the nested logit model. Therefore, the values presented here may differ from those in table 1, where person characteristics were derived from the full sample of 4,331 commuters who responded to the survey.

Table 3 Definition of Explanatory Variables

Table 3
Definition of Explanatory Variables