The issues are the issue: Intangible salience and war duration

Figures & data

Figure 1. Length of wars

Figure 2. Frequency of disputed issues

Figure 3. Intangible salience of issues

Table 1. Summary statistics for independent variables

	N	Mean	Std. Dev	Min	Max
Intangible Salience	44,036	1.499	0.575	0.368	2.661
Democratic Challenger	45,023	0.147	0.355	0	1
Terrain	45,456	0.726	0.196	0.2	1.05
Contiguous	45,456	0.523	0.499	0	1
Relative Capabilities	43,974	74.212	14.468	50.145	99.318
Number of States	45,456	5.025	4.144	2	18
Major Power Dyad	45,456	0.308	0.461	0	1
Strategy	45,456	4.659	1.440	2	8
New Leader	45,456	0.321	0.545	0	2

Table 2. Cox models on war duration (robust standard errors)

	(1)		(2)		(3)
Intangible Salience	0.476*** (0.087)		0.421*** (0.086)		0.462*** (0.101)
Democratic Challenger		1.775*		1.672
		(0.582)		(0.585)
Terrain		0.300**		0.248**
		(0.158)		(0.147)
Relative Capabilities		1.020**		1.026***
		(0.009)		(0.010)
Strategy		0.466***		0.467***
		(0.089)		(0.090)
Major Power Dyad				1.388***
				(0.644)
Number of States				0.903*
				(0.051)
Contiguous				1.335
				(0.302)
New Leader				1.760** (0.446)
Observations	43,974		43,541		43,541
Log Likelihood	−294.447		−269.350		−264.651

Note: *p < 0.10 **p < 0.05 ***p < 0.01

Figure 4. Predicted survival at various levels of intangible salience