Table 4 Mediation models

oxyHb

 Right AHS/Ch. 1/CA in ST

β = 0.000 (0.000);

z (39) = 1.828; p = 0.068

β = 64.051 (52.713);

z (39) = 1.498; p = 0.134

β = 0.025; CI [− 0.008 to 0.095]

β = − 0.003 (0.075); z (39) = − 0.234; p = 0.815

 Left AHS/Ch. 2/RT in ST

β = 0.001 (0.000);

z (39) = 2.189; p = 0.029

β = − 1.854 (0.636);

z (39) = − 2.948; p = 0.003

β = − 0.002; CI [− 0.005 to 0.000]

β = − 0.004 (0.002); z (39) = − 2.175; p = 0.030

 Left NHS/Ch. 2/RT in ST

β = 0.016 (0.011);

z (39) = 1.537; p = 0.124

β = − 1.954 (0.710);

z (39) = − 2.801; p = 0.005

β = − 0.032; CI [− 0.097 to 0.003]

β = − 0.082 (0.050); z (39) = − 1.862; p = 0.063

 Left AHS/Ch. 5/RT in ST

β = 0.001 (0.000);

z (36) = 1.694; p = 0.090

β = − 3.004 (1.158);

z (36) = − 2.523; p = 0.012

β = − 0.002; CI [− 0.007 to 0.000]

β = − 0.002 (0.003); z (36) = − 0.680; p = 0.497

 Left NHS/Ch. 5/RT in ST

β = 0.014 (0.011);

z (36) = 1.271; p = 0.204

β = − 3.076 (1.056);

z (36) = − 2.857; p = 0.004

β = − 0.042; CI [− 0.150 to 0.012]

β = − 0.038 (0.061); z (36) = − 0.661; p = 0.509

 Left AHS/Ch. 10/RT in ST

β = 0.000 (0.000);

z (39) = 1.315; p = 0.188

β = − 4.091 (1.362);

z (39) = − 3.008; p = 0.003

β = − 0.002; CI [− 0.007 to 0.001]

β = − 0.003 (0.003); z (39) = − 1.230; p = 0.219

 Left NHS/Ch. 10/RT in ST

β = 0.010 (0.010);

z (39) = 1.237; p = 0.216

β = − 4.087 (1.290);

z (39) = − 3.190; p = 0.001

β = − 0.041; CI [− 0.170 to 0.016]

β = − 0.062 (0.062); z (39) = − 0.998; p = 0.318

 Left AHS/Ch. 12/RT in ST

β = 0.001 (0.000);

z (39) = 1.445; p = 0.148

β = − 1.949 (1.757);

z (39) = − 1.213; p = 0.225

β = − 0.001; CI [− 0.005 to 0.001]

β = − 0.004 (0.003); z (39) = − 1.157; p = 0.247

 Left NHS/Ch. 12/RT in ST

β = 0.009 (0.009);

z (39) = 0.661; p = 0.509

β = − 2.101 (1.747);

z (39) = − 1.310; p = 0.190

β = − 0.018; CI [− 0.101 to 0.010]

β = − 0.075 (0.066); z (39) = − 1.211; p = 0.226

 Left AHS/Ch. 15/RT in ST

β = 0.001 (0.000);

z (36) = 1.557; p = 0.119

β = − 2.227 (1.656);

z (36) = − 1.587; p = 0.112

β = − 0.002; CI [− 0.007 to 0.000]

β = − 0.002 (0.003); z (36) = − 0.533; p = 0.594

 Left NHS/Ch. 15/RT in ST

β = 0.018 (0.009);

z (36) = 1.761; p = 0.078

β = − 2.253 (1.592);

z (36) = − 1.685; p = 0.092

β = − 0.041; CI [− 0.135 to 0.005]

β = − 0.040 (0.075); z (36) = − 0.553; p = 0.580

 Left AHS/Ch. 21/RT in ST

β = 0.000 (0.000);

z (38) = 1.758; p = 0.079

β = − 1.781 (1.357);

z (38) = − 1.473; p = 0.141

β = − 0.001; CI [− 0.003 to 0.000]

β = − 0.004 (0.003); z (38) = − 1.483; p = 0.138

 Left NHS/Ch. 21/RT in ST

β = 0.007 (0.006);

z (38) = 0.987; p = 0.324

β = − 1.878 (1.461);

z (38) = − 1.389; p = 0.165

β = − 0.013; CI [− 0.065 to 0.012]

β = − 0.082 (0.069); z (38) = − 1.285; p = 0.199

deoxyHb

 Left AHS/Ch. 2/RT in ST

β = 0.000 (0.000);

z (39) = − 1.581; p = 0.114

β = 6.522 (5.036);

z (39) = 1.562; p = 0.118

β = − 0.001; CI [− 0.006 to 0.000]

β = − 0.005 (0.002); z (39) = − 2.369; p = 0.018

 Left NHS/Ch. 2/RT in ST

β = − 0.003 (0.003);

z (39) = − 1.189; p = 0.235

β = 6.710 (6.091);

z (39) = 1.362; p = 0.173

β = − 0.019; CI [− 0.134 to 0.010]

β = − 0.098 (0.049); z (39) = − 2.083; p = 0.037

 Left AHS/Ch. 5/RT in ST

β = 0.000 (0.000);

z (36) = − 1.944; p = 0.052

β = 6.349 (3.104);

z (36) = 2.037; p = 0.042

β = − 0.002; CI [− 0.006 to 0.000]

β = − 0.002 (0.003); z (36) = − 0.662; p = 0.508

 Right AHS/Ch. 5/RT in ST

β = 0.000 (0.000);

z (36) = − 1.480; p = 0.139

β = 6.989 (2.621);

z (36) = 2.689; p = 0.007

β = − 0.002; CI [− 0.006 to 0.000]

β = − 0.001 (0.003); z (36) = − 0.198; p = 0.843

 Left NHS/Ch. 5/RT in ST

β = − 0.007 (0.005);

z (36) = − 1.626; p = 0.104

β = 6.473 (3.060);

z (36) = 2.183; p = 0.029

β = − 0.042; CI [− 0.169 to 0.011]

β = − 0.046 (0.031); z (36) = − 0.415; p = 0.678

 Right NHS/Ch. 5/RT in ST

β = − 0.005 (0.005);

z (36) = − 1.417; p = 0.156

β = 6.965 (2.587);

z (36) = 2.788; p = 0.005

β = − 0.034; CI [− 0.147 to 0.009]

β = − 0.028 (0.064); z (36) = − 0.083; p = 0.934

 Left AHS/Ch. 5/CA in ST

β = 0.000 (0.000);

z (36) = − 1.922; p = 0.055

β = − 133.058 (117.670);

z (36) = − 1.223; p = 0.222

β = 0.039; CI [− 0.022 to 0.198]

β = 0.001 (0.089); z (36) = − 0.202; p = 0.840

 Right AHS/Ch. 5/CA in ST

β = 0.000 (0.000);

z (36) = − 1.483; p = 0.138

β = − 136.131 (119.154);

z (36) = − 1.262; p = 0.207

β = 0.030; CI [− 0.019 to 0.170]

β = − 0.006 (0.091); z (36) = − 0.410; p = 0.682

 Left NHS/Ch. 5/CA in ST

β = − 0.007 (0.005);

z (36) = − 1.609; p = 0.108

β = − 113.039 (115.465);

z (36) = − 1.047; p = 0.295

β = 0.737; CI [− 0.752 to 4.501]

β = 0.912 (1.683); z (36) = 0.520; p = 0.603

 Right NHS/Ch. 5/CA in ST

β = − 0.005 (0.005);

z (36) = − 1.400; p = 0.161

β = − 117.697 (117.911);

z (36) = − 1.064; p = 0.287

β = 0.568; CI [− 0.669 to 3.706]

β = 0.691 (1.649); z (36) = − 0.345; p = 0.730

 Left AHS/Ch. 7/RT in ST

β = 0.000 (0.000);

z (38) = − 2.180; p = 0.029

β = 4.306 (11.759);

z (38) = 0.416; p = 0.677

β = − 0.001; CI [− 0.009 to 0.006]

β = − 0.005 (0.004); z (38) = − 1.147; p = 0.251

Left NHS/Ch. 7/RT in ST

β = − 0.005 (0.004);

z (38) = − 1.841; p = 0.066

β = 5.213 (7.642);

z (38) = 0.739; p = 0.460

β = − 0.026; CI [− 0.174 to 0.070]

β = − 0.091 (0.065); z (38) = − 1.507; p = 0.132

 Left AHS/Ch. 14/CA in ST

β = 0.000 (0.000);

z (38) = − 1.535; p = 0.125

β = − 160.626 (75.764);

z (38) = − 2.060; p = 0.039

β = 0.065; CI [− 0.008 to 0.262]

β = 0.015 (0.072); z (38) = 0.237; p = 0.813

 Left NHS/Ch. 14/CA in ST

β = − 0.007 (0.007);

z (38) = − 1.327; p = 0.185

β = − 154.613 (75.744);

z (38) = − 1.994; p = 0.046

β = 1.151; CI [− 0.384 to 5.134]

β = 0.945 (1.521); z (38) = 0.851; p = 0.395