Activity-Trip Chaining Behavior of Urban Low-Income Populations in Nanjing, China: A Structural Equations Analysis

Table 4

Statistical characteristics of the endogenous variables.

Endogenous; variables	Low-income group (846 individuals)					Non-low-income group (7534 individuals)
	Population		Nonzero sample			Population		Nonzero sample
	Mean	Variance	Mean	Variance	Sample size	Mean	Variance	Mean	Variance	Sample size
𝐷_𝐻 (hour)	16.93	4.03	16.93	4.03	846	15.36	3.42	15.34	3.42	7534
𝐷_𝑆 (hour)	5.11	4.59	8.86	1.81	488	6.36	4.19	8.67	1.97	5531
𝐷_𝑀 (hour)	0.31	0.76	1.17	1.02	225	0.36	0.97	1.25	1.48	2164
𝐷_𝐿 (hour)	0.62	1.37	2.18	1.80	238	0.65	1.60	2.55	2.28	1906
𝑁_𝑊 (chain)	0.62	0.57	1.08	0.27	488	0.85	0.61	1.16	0.37	5531
𝑇_𝑊 (hour)	0.64	0.69	1.12	0.54	488	0.85	0.85	1.15	0.80	5531
𝑁_𝑂 (chain)	0.54	0.66	1.22	0.41	373	0.55	0.80	1.42	0.64	2915
𝑇_𝑂 (hour)	0.39	0.57	0.88	0.54	373	0.44	0.77	1.14	0.86	2915