Table 5 Multivariate linear regression analysis results for ratings stratified by group

Sex (female vs. male)

-0.405

-0.572 to -0.237

 < 0.001

-0.330

-0.492 to -0.168

 < 0.001

Age

0.061

0.043 to 0.079

 < 0.001

0.028

-0.027 to 0.083

0.326

Degree of asymmetry of image (mm)

-1.207

-1.301 to -1.114

 < 0.001

-1.232

-1.329 to -1.136

 < 0.001

Level of degree of asymmetry of image

 Moderate vs. mild

-1.307

-1.495 to -1.119

 < 0.001

-1.181

-1.375 to -0.987

 < 0.001

 Severe vs. mild

-2.415

-2.603 to -2.227

 < 0.001

-2.465

-2.659 to -2.271

 < 0.001

Type of asymmetry of image

 Vertical vs. horizontal

0.063

-0.125 to 0.251

0.509

-0.174

-0.368 to -0.020

0.078

 Sagittal vs. horizontal

1.28

1.091 to 1.468

 < 0.001

1.178

0.984 to 1.372

 < 0.001

 Sagittal vs. vertical

1.216

1.028 to 1.404

 < 0.001

1.352

1.158 to 1.546

 < 0.001

Part of asymmetry of image

 go vs. mt

1.969

1.752 to 2.186

 < 0.001

1.833

1.609 to 2.057

 < 0.001

 ch vs. mt

1.564

1.346 to 1.781

 < 0.001

0.898

0.674 to 1.122

 < 0.001

 zy vs. mt

2.779

2.562 to 2.996

 < 0.001

2.551

2.327 to 2.775

 < 0.001

 ch vs. go

-0.405

-0.622 to -0.188

 < 0.001

-0.935

-1.159 to -0.711

 < 0.001

 zy vs. go

0.81

0.593 to 1.027

 < 0.001

0.718

0.494 to 0.942

 < 0.001

 Zy vs. ch

1.215

0.998 to 1.432

 < 0.001

1.653

1.429 to 1.877

 < 0.001