Table 1.

Descriptive statistics for China Eastern's data.

Variable	Description	Obs	Mean	Std. dev.	Min	Max
War	War = 1 if China Eastern is experiencing a price war	3266	0.051	0.219	0	1
Collusion	Collusion = 1 if China Eastern is participating in collusion	3266	0.081	0.273	0	1
oaptshare	Market share for China Eastern at departure airport	4068	0.244	0.145	0	0.829
oapthhi	Herfindahl–Hirschman index of departure airport	4068	2723.715	1148.535	1261.177	7844.215
murouteshare	Share of China Eastern in a route market	4068	0.406	0.252	0	1
mmc	Average route market contact	4068	36.517	24.779	0	115
distance	Route distance	4068	1180.593	577.040	160	3649
tourismroute	tourismroute = 1 if a market is a tourism market	4068	0.212	0.409	0	1
busyapt	busiapt = 1 if the departure airport handled more than 10,000,000 passengers in 2004	4068	0.531	0.499	0	1
hubtohub	hubtohub = 1 if a market links China Eastern's primary or secondary hubs	4068	0.124	0.330	0	1
sarsdummy	Sarsdummy = 1 for periods of May and June 2003	4068	0.056	0.229	0	1
ca	ca = 1 if Air China is present in a market	4068	0.204	0.403	0	1
cz	cz = 1 if China Southern is present in a market	4068	0.290	0.454	0	1
fm	fm = 1 if Shanghai Airlines is present in a market	4068	0.260	0.439	0	1
hu	hu = 1 if Hainan Airlines is present in a market	4068	0.171	0.377	0	1
y2003	y2003 = 1 for year 2003	4068	0.333	0.471	0	1
y2004	y2004 = 1 for year 2004	4068	0.333	0.471	0	1
Jan, Feb, Mar, Apr, May, Jul, Aug, Sep, Oct, Nov, Dec	Each month dummy takes 1 in that particular month otherwise 0.	4068	0.083	0.276	0	1
paxno	The number of passengers carried by China Eastern in a market in a given month	3661	6020.447	7371.054	26	71,645