Table S2.

Flight level variable descriptives and correlations (only flights with first class)

VariableMeanSD1234567891011
1. First class incident (= 1)0.00030.01681.000
2. Economy incident (= 1)0.00150.0392−0.001
3. First class seats on aircraft14.21087.60340.0220.038
4. Economy seats on aircraft116.352158.24370.0210.0380.925
5. Flight distance in miles1443.31301322.51400.0220.0410.7770.714
6. Flight delay in hours0.22060.59190.0020.0110.0500.0450.060
7. First class seat width (cm)*52.26941.24780.0020.0050.2290.2720.120−0.007
8. Economy seat width (cm)45.24450.73980.0040.0080.0970.1530.100−0.000−0.497
9. Economy seat pitch (in cm)81.76036.74710.0080.0160.5090.3480.4050.0460.337−0.366
10. Cabin area [height × width (m2)]7.59612.75090.0190.0350.9160.8670.7360.0490.2760.1720.640
11. International (= 1)0.48370.49970.0070.0110.2280.1510.3500.055−0.045−0.0130.2430.212
12. Front boarding (= 1)0.86160.3453−0.019−0.035−0.877−0.762−0.736−0.0600.089−0.084−0.627−0.873−0.273
  • * Seat pitch data are not available for first class because many first class seats had their own pods/beds.