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Table 3 Spearman correlation of lipids identified by PCA with ME/CFS symptoms

From: Sex-specific plasma lipid profiles of ME/CFS patients and their association with pain, fatigue, and cognitive symptoms

PC1

PC2

PC3

Lipids

Headache

Physical pain

Cognitive difficulties

Fatigue

Lipids

Headache

Physical pain

Cognitive difficulties

Fatigue

Lipids

Headache

Physical pain

Cognitive difficulties

Fatigue

PC 32:2

− 0.039

0.178

− 0.073

0.217

PC 40:6

− 0.127

0.090

− 0.244

− 0.464**

ePC 34:3

− 0.409*

− 0.295

0.09

− 0.097

PC 32:3

− 0.065

0.185

− 0.071

0.085

PC 38:7

− 0.315

− 0.082

− 0.271

− 0.471**

PC 36:2

− 0.338

− 0.124

0.018

0.021

PC 34:4

− 0.079

0.172

− 0.166

0.024

PC 40:7

− 0.271

− 0.152

− 0.271

− 0.471**

ePC 38:4

− 0.254

− 0.108

0.133

0.008

PC 34:5

− 0.105

0.120

− 0.180

− 0.188

PC 36:5

− 0.184

0.012

− 0.254

− 0.393*

PC 34:2

− 0.244

− 0.021

0.118

0.206

PC 34:3

− 0.196

0.140

− 0.147

0.036

PC 36:6

− 0.143

0.117

− 0.273

− 0.336

PC 40:3

− 0.373

− 0.250

− 0.068

− 0.012

SM(d18:1/14:1)

− 0.260

− 0.049

− 0.301

− 0.169

PC 38:5

− 0.179

− 0.04

− 0.316

− 0.398*

PC 36:3

− 0.226

0.010

0.052

0.158

PC 36:6

− 0.143

0.117

− 0.273

− 0.336

PC 42:6

− 0.122

− 0.161

− 0.237

− 0.252

SM(d18:1/16:0)

− 0.356

− 0.118

− 0.098

− 0.264

PC 36:3

− 0.226

0.010

0.052

0.158

SM(d18:1/16:0)

− 0.356

− 0.118

− 0.098

− 0.264

PC 38:2

− 0.201

− 0.069

− 0.139

− 0.007

PC 38:2

− 0.201

− 0.069

− 0.139

− 0.007

PC 34:5

− 0.105

0.120

− 0.180

− 0.188

PC 38:1

− 0.192

− 0.163

− 0.044

− 0.094

PC 34:2

− 0.244

− 0.021

0.118

0.206

SM(d18:1/16:1)

− 0.311

− 0.115

− 0.209

− 0.265

SM(d18:1/16:1)

− 0.311

− 0.115

− 0.209

− 0.265

PI 36:3

− 0.179

− 0.032

− 0.122

0.039

PC 38:1

− 0.192

− 0.163

− 0.044

− 0.094

PC 38:4

− 0.206

0.073

− 0.232

− 0.240

PI 34:1

− 0.102

0.085

0.017

0.269

SM(d18:1/18:1)

− 0.216

0.068

− 0.189

− 0.292

PC 34:3

− 0.196

0.140

− 0.147

0.036

PI 38:3

− 0.143

0.200

− 0.158

0.125

SM(d18:1/14:1

− 0.260

− 0.049

− 0.301

− 0.169

PC 38:3

0.008

0.252

− 0.030

0.158

SM(d18:1/16:1)

− 0.311

− 0.115

− 0.209

− 0.265

PC 42:5

− 0.093

− 0.028

− 0.210

− 0.069

     

PC 36:2

− 0.338

− 0.124

0.018

0.021

PC 40:3

− 0.373

− 0.250

− 0.068

− 0.012

     

Cer 40:3

− 0.048

0.144

− 0.207

0.052

LPC 18:1

− 0.352

− 0.273

− 0.081

− 0.104

     

PC 38:3

0.008

0.252

− 0.030

0.158

          
  1. The coefficient of correlation of each individual lipid from the 3 principal components (PC1, PC2 and PC3) with the severity of headache, physical pain, cognitive difficulties or fatigue is reported in the table. Asterisks show significant correlations using adjusted p-values after B–H correction (*p < 0.05; **p < 0.01)