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Table 6 Estimates of the multinomial logit and probit (rest of equations)

From: Horizontal equity in access to public GP services by socioeconomic group: potential bias due to a compartmentalised approach

Private GP equation Multinomial logit Multinomial probit
Coefficient (se) p-value Coefficient (se) p-value
Female 0.0761 (0.1136) 0.503 0.0649 (0.058) 0.263
Age 15–34 Ref. Ref. Ref. Ref.
Age 35–44 0.2581 (0.2129) 0.226 0.1109 (0.1052) 0.292
Age 45–54 0.3061 (0.2144) 0.153 0.1249 (0.1063) 0.240
Age 55–64 0.2628 (0.2205) 0.233 0.1213 (0.1093) 0.267
Age more than 64 0.6236 (0.2326) 0.007 0.3058 (0.1169) 0.009
Health very good Ref. Ref. Ref. Ref.
Health good 0.2652 (0.167) 0.112 0.1918 (0.0853) 0.025
Health fair 0.7346 (0.2007) 0.000 0.5703 (0.1027) 0.000
Health bad 1.3745 (0.264) 0.000 1.0034 (0.1351) 0.000
Health very bad 0.3553 (0.6107) 0.561 0.5842 (0.2751) 0.034
Chronic 0.4233 (0.1458) 0.004 0.3269 (0.0746) 0.000
Inactive Ref. Ref. Ref. Ref.
Employed −0.2397 (0.1814) 0.186 −0.1546 (0.0914) 0.091
Unemployed −0.308 (0.2628) 0.241 −0.1659 (0.128) 0.195
Primary studies or less Ref. Ref. Ref. Ref.
Obligatory Secondary studies 0.6511 (0.2171) 0.003 0.3318 (0.1006) 0.001
Occupational training or pre-university studies 1.2709 (0.2126) 0.000 0.6176 (0.1022) 0.000
University studies 1.6011 (0.2228) 0.000 0.8323 (0.1078) 0.000
High social class (SC) Ref. Ref. Ref. Ref.
Medium-high SC −0.3199 (0.1419) 0.024 −0.176 (0.0751) 0.019
Medium-low SC −1.2271 (0.203) 0.000 −0.5916 (0.0957) 0.000
Low social class −1.309 (0.2946) 0.000 −0.6203 (0.1323) 0.000
Intercept −5.1067 (0.327) 0.000 −3.2551 (0.1568) 0.000
Public Specialist equation Multinomial logit Multinomial probit
Mean (se) p-value Mean (se) p-value
Female 0.2037 (0.0537) 0.000 0.1492 (0.035) 0.000
Age 15–34 Ref. Ref. Ref. Ref.
Age 35–44 −0.0379 (0.1016) 0.709 −0.0167 (0.0645) 0.795
Age 45–54 0.0066 (0.0985) 0.946 0.0079 (0.0635) 0.901
Age 55–64 0.0169 (0.0979) 0.863 0.0283 (0.0636) 0.657
Age more than 64 −0.2071 (0.1066) 0.052 −0.096 (0.0692) 0.166
Health very good Ref. Ref. Ref. Ref.
Health good 0.544 (0.104) 0.000 0.3522 (0.0604) 0.000
Health fair 1.4998 (0.112) 0.000 1.0405 (0.0672) 0.000
Health bad 2.3166 (0.128) 0.000 1.6332 (0.0812) 0.000
Health very bad 2.4384 (0.1699) 0.000 1.7281 (0.115) 0.000
Chronic 0.742 (0.0815) 0.000 0.529 (0.0493) 0.000
Inactive Ref. Ref. Ref. Ref.
Employed −0.28 (0.0796) 0.000 −0.1959 (0.0527) 0.000
Unemployed −0.1337 (0.1005) 0.183 −0.0931 (0.0672) 0.166
Primary studies or less Ref. Ref. Ref. Ref.
Obligatory Secondary studies 0.2421 (0.0753) 0.001 0.169 (0.0497) 0.001
Occupational training or pre-university studies 0.224 (0.0883) 0.011 0.1619 (0.0579) 0.005
University studies 0.3999 (0.1038) 0.000 0.2912 (0.0674) 0.000
High social class (SC) Ref. Ref. Ref. Ref.
Medium-high SC 0.072 (0.0888) 0.418 0.0362 (0.0569) 0.525
Medium-low SC 0.0989 (0.0936) 0.291 0.0527 (0.0602) 0.382
Low social class −0.011 (0.1098) 0.920 −0.0169 (0.0711) 0.812
Intercept −3.7594 (0.1603) 0.000 −2.6967 (0.0993) 0.000
Private Specialist equation Multinomial logit Multinomial probit
Coefficient (se) p-value Coefficient (se) p-value
Female 0.3034 (0.0831) 0.000 0.1877 (0.047) 0.000
Age 15–34 Ref. Ref. Ref. Ref.
Age 35–44 0.1178 (0.1391) 0.397 0.0485 (0.0798) 0.544
Age 45–54 0.0272 (0.1426) 0.849 0.013 (0.0812) 0.873
Age 55–64 −0.1075 (0.1495) 0.472 −0.0495 (0.0843) 0.557
Age more than 64 −0.0627 (0.1624) 0.700 −0.0252 (0.0918) 0.783
Health very good Ref. Ref. Ref. Ref.
Health good 0.3097 (0.1233) 0.012 0.2139 (0.0695) 0.002
Health fair 1.1203 (0.1434) 0.000 0.7801 (0.0816) 0.000
Health bad 1.4544 (0.2017) 0.000 1.0387 (0.1125) 0.000
Health very bad 1.7588 (0.2802) 0.000 1.2381 (0.1623) 0.000
Chronic 0.507 (0.1059) 0.000 0.3954 (0.0602) 0.000
Inactive Ref. Ref. Ref. Ref.
Employed −0.2145 (0.1251) 0.086 −0.1409 (0.0708) 0.047
Unemployed −0.4884 (0.1866) 0.009 −0.268 (0.1007) 0.008
Primary studies or less Ref. Ref. Ref. Ref.
Obligatory Secondary studies 0.701 (0.1548) 0.000 0.3559 (0.0789) 0.000
Occupational training or pre-university studies 0.9879 (0.1598) 0.000 0.5083 (0.0835) 0.000
University studies 1.5129 (0.1642) 0.000 0.8333 (0.0881) 0.000
High social class (SC) Ref. Ref. Ref. Ref.
Medium-high SC −0.5003 (0.1044) 0.000 −0.2938 (0.062) 0.000
Medium-low SC −1.1813 (0.1385) 0.000 −0.6321 (0.0749) 0.000
Low social class −1.3547 (0.2003) 0.000 −0.715 (0.1021) 0.000
Intercept −4.2553 (0.231) 0.000 −2.8639 (0.1248) 0.000