Table 3 Covariate-adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) for Bell’s palsy among sampled population

Depressive disorder

1.313

1.169–1.474

< 0.0001

1.315

1.168–1.481

< 0.0001

Demographics

Age

1.011

1.01–1.013

< 0.0001

1.012

1.010–1.013

< 0.0001

Sex

Female

0.91

0.869–0.953

< 0.0001

0.909

0.869–0.952

< 0.0001

Male

Ref.

Ref.

Region

Taipei

1.024

0.873–1.201

0.770

1.013

0.865–1.187

0.874

Northern

1.097

0.93–1.294

0.274

1.083

0.919–1.277

0.340

Central

1.026

0.87–1.208

0.763

1.012

0.86–1.191

0.884

Southern

1.094

0.927–1.291

0.287

1.075

0.912–1.267

0.389

Kaoping

1.013

0.859–1.196

0.875

1.001

0.849–1.18

0.991

Eastern

Ref.

Ref.

Comorbidities

Hypertension

1.269

1.187–1.356

< 0.0001

1.268

1.186–1.355

< 0.0001

Hyperlipidemia

1.086

1.004–1.176

0.041

1.084

1.001–1.173

0.047

Diabetes mellitus

1.506

1.392–1.63

< 0.0001

1.513

1.398–1.637

< 0.0001

Stroke

1.004

0.89–1.133

0.948

1.011

0.896–1.141

0.858

Herpes simplex virus

1.006

0.8-1.264

0.962

0.988

0.783–1.246

0.916

Head injury

1.076

0.87–1.332

0.499

1.100

0.890–1.359

0.378

Obesity

0.962

0.626–1.478

0.859

0.966

0.628–1.485

0.874

Tobacco use disorder

1.121

0.773–1.626

0.545

1.111

0.764–1.616

0.582

Alcoholism

0.729

0.391–1.358

0.319

0.806

0.445–1.461

0.478