Table 5 Quantile regressions at τ = 0.7 (p70), τ = 0.80 (p80), and τ = 0.90 (p90)

Woman vs. Man

− 2.66** (1.06)

− 103.13 (60.96)

− 93.75** (28.00)

− 241.67 (169.62)

− 229.49** (67.95)

− 216.44 (232.27)

> 65 years of age

3.00** (1.21)

− 337.5** (68.67)

88.28** (32.00)

− 846.9** (191.48)

328.21** (79.35)

− 1190.4** (265.05)

Married vs. Not married

− 1.25 (1.46)

60.94 (82.16)

− 65.23 (40.05)

88.56 (225.23)

− 196.15** (91.52)

234.25 (302.08)

Medium-high vs. High social class

− 96.67** (1.38)

84.9 (78.95)

− 214.4** (36.80)

10.29 (218.46)

− 126.92 (90.81)

− 71.23 (312.25)

Medium vs. High social class

− 96.67** (1.5)

1.04 (86.02)

− 235.6** (39.32)

− 282.35 (240.25)

− 257.69** (96.27)

− 453.42 (340.57)

Medium-low vs. High social class

− 98.33** (1.72)

145.05 (101.74)

− 266.0** (45.36)

− 141.83 (283.26)

− 401.28** (106.38)

− 572.6 (399.33)

Low vs. High social class

− 101.2** (5.62)

− 126.04 (323.13)

− 280.86 (155.7

− 799.67 (935.82)

− 432.05** (153.47)

− 1897.3* (1139.82)

< €1150 vs > €2600/month

− 2.46 (2.33)

79.43 (129.7)

− 23.05 (64.08)

629.74 (353.04)

− 54.49 (149.13)

798.63* (478.25)

€1150–1800 vs. > €2600 €/month

− 2.84 (1.75)

87.76 (100.32)

− 53.52 (47.47)

357.52 (277.66)

− 41.03 (112.53)

365.75 (393.91)

€1801–2600 vs. > €2600 €/month

− 1.81 (1.34)

78.13 (76.18)

− 60.94* (35.53)

263.56 (211.01)

− 173.08** (86.86)

497.26* (289.95)

Moderate vs. Bad health condition

− 1.9 (5.38)

− 179.43 (346.42)

− 59.77 (159.2)

− 913.4 (954.84)

− 146.15 (389.64)

− 68.49 (1311.36)

Medium vs. Bad health condition

− 1.51 (5.27)

− 201.56 (341.64)

− 48.05 (157.19)

− 1076.8 (942.25)

− 29.49 (385.08)

− 187.67 (1299.95)

Very good vs. Bad health condition

0.65 (5.33)

− 228.13 (344.9)

23.44 (158.68)

− 1176.63 (950.61)

57.69 (388.23)

− 353.42 (1307.84)

Excellent vs. Bad health condition

0.16 (5.71)

− 199.48 (363.08)

− 30.47 (167.33)

− 1165.36 (1003.54)

117.95 (410.74)

− 401.37 (1379.63)

Preference for anaesthesiologist vs. indifferent

101.79** (1.17)

− 101.04 (67.8)

225.39** (30.39)

− 322.88 (189.08)

367.95** (72.35)

− 106.85 (253.18)

Preference for PA vs. indifferent

1.25 (2.49)

− 11.72 (144.48)

13.67 (66.87)

− 188.24 (399.66)

− 34.62 (161.25)

− 195.89 (512.53)

Aversion towards risk score (≤ 4)

0.91 (1.09)

− 42.19 (61.51)

48.44 (28.93)

− 188.40 (171.73)

144.87** (69.74)

− 345.21 (237.42)

Trust in government (1–10)

0.30 (0.27)

− 29.43** (15.48)

3.13 (7.16)

− 166.83** (44.07)

14.10 (17.57)

− 161.64** (58.27)

Possible strategic bias (1–10)

− 1.15** (0.23)

25.52* (13.12)

− 24.22** (6.09)

88.56** (35.84)

− 57.69** (14.77)

123.29** (51.44)

Constant

109.68** (6.17)

876.56** (385.68)

641.80** (178.03)

3745.59** (1068.09)

1303.85** (451.38)

3986.3** (1518.12)

Estimated value

94.85

432.36

324.53

1361.95

782.14

1927.88

Observed value

50

400

200

1000

800

3000