Table 3 Seemingly unrelated regression (SUR) models on standardised dependent variables and SES indicators

Intercept

1.663 (-0.629; 3.954)

2.338 (0.042; 4.635)

-4.822 (-7.240; -2.405)

-5.586 (-8.008; -3.165)

-0.192 (-2.447; 2.062)

-0.432 (-2.704; 1.841)

Age

-0.003 (-0.003; -0.002)

-0.003 (-0.004; -0.002)

0.004 (0.003; 0.004)

0.004 (0.003; 0.004)

-0.016 (-0.017; -0.016)

-0.016 (-0.017; -0.016)

Females

0.016 (-0.004; 0.035)

0.012 (-0.008; 0.032)

0.091 (0.070; 0.112)

0.094 (0.073; 0.115)

-0.042 (-0.062; -0.022)

-0.042 (-0.061; -0.022)

Education

Basic education (ref. no degree)

0.132 (0.084; 0.180)

0.129 (0.081; 0.177)

0.032 (-0.018; 0.083)

0.020 (-0.030; 0.071)

0.052 (0.004; 0.100)

0.053 (0.005; 0.101)

Intermediate

0.361 (0.311; 0.410)

0.358 (0.308; 0.407)

0.022 (-0.031; 0.074)

-0.027 (-0.079; 0.025)

0.098 (0.048; 0.147)

0.098 (0.048; 0.147)

Maturity

0.454 (0.401; 0.506)

0.446 (0.393; 0.499)

0.096 (0.040; 0.151)

0.035 (-0.021; 0.090)

0.107 (0.054; 0.159)

0.106 (0.053; 0.159)

Tertiary

0.784 (0.733; 0.835)

0.776 (0.725; 0.827)

0.132 (0.078; 0.186)

0.033 (-0.022; 0.087)

0.164 (0.113; 0.215)

0.159 (0.107; 0.210)

Employment status

Part-time (ref. full-time)

-0.143 (-0.174; -0.112)

-0.142 (-0.173; -0.110)

-0.044 (-0.077; -0.011)

-0.030 (-0.063; 0.003)

-0.023 (-0.054; 0.008)

-0.023 (-0.054; 0.009)

Irregular

-0.419 (-0.463; -0.375)

-0.415 (-0.459; -0.371)

-0.106 (-0.153; -0.060)

-0.071 (-0.118; -0.025)

-0.012 (-0.056; 0.032)

-0.013 (-0.057; 0.032)

Vocational

-0.062 (-0.123; -0.002)

-0.066 (-0.126; -0.006)

0.080 (0.016; 0.143)

0.069 (0.006; 0.133)

-0.035 (-0.095; 0.025)

-0.037 (-0.097; 0.023)

Not employed

-0.532 (-0.556; -0.508)

-0.531 (-0.554; -0.507)

-0.108 (-0.133; -0.083)

-0.056 (-0.082; -0.031)

-0.137 (-0.161; -0.114)

-0.138 (-0.162; -0.114)

Marital status

Single (ref. married)

-0.541 (-0.567; -0.515)

-0.531 (-0.557; -0.505)

-0.134 (-0.161; -0.106)

-0.068 (-0.096; -0.040)

0.045 (0.019; 0.071)

0.044 (0.017; 0.071)

Sep./Divorced

-0.743 (-0.773; -0.713)

-0.726 (-0.756; -0.696)

-0.272 (-0.304; -0.241)

-0.182 (-0.214; -0.150)

0.038 (0.008; 0.068)

0.038 (0.007; 0.069)

Other

-0.531 (-0.569; -0.493)

-0.525 (-0.563; -0.487)

-0.125 (-0.165; -0.084)

-0.048 (-0.089; -0.007)

0.044 (0.006; 0.082)

0.045 (0.006; 0.083)

Main effects

IN-B (ref. A)

-0.123 (-0.151; -0.094)

-0.097 (-0.140; -0.055)

-0.032 (-0.060; -0.005)

-0.048 (-0.091; -0.005)

IN-C

-0.277 (-0.307; -0.247)

-0.241 (-0.287; -0.196)

-0.018 (-0.047; 0.010)

-0.015 (-0.063; 0.034)

IN-D

-0.419 (-0.457; -0.382)

-0.335 (-0.398; -0.272)

-0.022 (-0.059; 0.014)

-0.069 (-0.139; 0.001)

SH-B (ref. A)

0.007 (-0.017; 0.030)

-0.003 (-0.043; 0.036)

-0.399 (-0.422; -0.376)

-0.365 (-0.417; -0.313)

SH-C

0.003 (-0.026; 0.033)

-0.120 (-0.186; -0.053)

-0.826 (-0.853; -0.798)

-0.751 (-0.818; -0.684)

SH-D

0.084 (0.041; 0.126)

-0.150 (-0.309; 0.008)

-1.431 (-1.469; -1.392)

-1.359 (-1.470; -1.249)

SL-B (ref. A)

-0.190 (-0.213; -0.167)

-0.215 (-0.248; -0.183)

-0.366 (-0.389; -0.344)

-0.370 (-0.419; -0.322)

SL-C

-0.429 (-0.457; -0.401)

-0.485 (-0.538; -0.432)

-0.796 (-0.821; -0.770)

-0.872 (-0.938; -0.805)

SL-D

-0.652 (-0.690; -0.613)

-0.606 (-0.716; -0.495)

-1.285 (-1.319; -1.251)

-1.192 (-1.301; -1.083)

Interaction effects(only reported if 0∉ 99% CI)

IN-B:SH-C

-0.090 (-0.169; -0.010)

IN-B:SL-C

0.087 (0.008; 0.165)

IN-C:SH-C

-0.083 (-0.163; -0.004)

IN-C:SL-D

-0.132 (-0.254; -0.011)

IN-D:SH-B

-0.095 (-0.182; -0.008)

IN-D:SH-C

-0.133 (-0.229; -0.037)

IN-D:SH-D

-0.178 (-0.312; -0.045)

IN-D:SL-C

0.134 (0.036; 0.232)

SL-B:SH-C

0.139 (0.061; 0.218)

SL-C:SH-C

0.194 (0.107; 0.280)

SL-C:SH-D

0.293 (0.121; 0.466)

SL-D:SH-D

0.200 (0.003; 0.396)

R²

0.316

0.317

0.242

0.243

0.318

0.319

ΔR²(%)

0.271

0.164

0.061