中国大城市病典型症状诱发因素的实证分析

中国大城市病典型症状诱发因素的实证分析

沈洁, 张可云

An empirical analysis of factors leading to typical urban problems in China

SHEN Jie, ZHANG Keyun

表3 门槛模型回归结果(交通拥堵)

Tab.3 Regression results of threshold model (traffic congestion)

变量	y₁
	size			concen			road
	size≤0.05	size>0.05		concen≤0.085	concen>0.085		road≤0.154	road>0.154
size	0.752^***	0.644^***		0.182	1.304^***		0.176*	0.746^**
	(0.098)	(0.094)		(0.110)	(0.276)		(0.088)	(0.354)
concen	0.412^***	0.587^***		0.061	0.776^***		0.514^***	1.144^**
	(0.093)	(0.047)		(0.187)	(0.093)		(0.074)	(0.620)
scnd	-0.305^***	-0.300^**		-0.320^***	0.349		-0.377^***	-1.251
	(0.118)	(0.132)		(0.113)	(0.196)		(0.103)	(1.214)
thrd	-0.256^**	-0.158^*		-0.296^**	0.546^*		-0.320^**	-2.048^*
	(0.122)	(0.113)		(0.117)	(0.231)		(0.105)	(1.217)
road	-0.366^***	0.127		-0.850^***	-0.332^*		-1.762^***	-0.787^***
	(0.086)	(0.440)		(0.191)	(0.186)		(0.082)	(0.090)
bus	-0.744^***	0.299^***		0.521^**	-0.889^*		-0.562^*	-0.545^***
	(0.377)	(0.125)		(0.087)	(0.473)		(0.327)	(0.129)
level	0.064	-0.087^***		0.005	0.230		0.034	0.049^***
	(0.064)	(0.025)		(0.032)	(0.136)		(0.036)	(0.011)
样本量	124	80		128	76		168	36
自由度	117	73		121	69		159	27
R²	0.497	0.552		0.427	0.467		0.325	0.629