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Table 2 Population Controls

From: Association between cervical artery dissection and spinal manipulative therapy –a medicare claims analysis

 

Vertebral Artery Dissection

Carotid Artery Dissection

Exposure

n cases

n controls

Odds Ratios (95% CI)

P-value

n cases

n controls

Odds Ratios (95% CI)

P-value

Exposure - Past 7 days

        

E&M

92

349

1

 

82

497

1

 

CSM

45

161

1.60 (0.66, 3.89)

0.30

20

82

0.75 (0.31, 1.82)

0.53

Neither CSM nor E&M

3,789

38,599

0.75 (0.46, 1.23)

0.25

4,993

50,081

1.26 (0.85, 1.86)

0.26

Exposure - Past 14 days

        

E&M

142

455

1

 

146

652

1

 

CSM

66

251

1.47 (0.70, 3.10)

0.31

34

299

1.15 (0.58, 2.30)

0.68

Neither CSM nor E&M

3,718

38,403

0.64 (0.42, 0.99)

0.042

4,915

49,832

1 (0.73, 1.37)

0.98

Exposure - Past 30 days

        

E&M

202

700

1

 

215

971

1

 

CSM

83

373

1.43 (0.76, 2.71)

0.27

68

446

1.74 (1.03, 2.94)

0.040

Neither CSM nor E&M

3,641

38,036

0.69 (0.49, 0.97)

0.034

4,812

49,366

0.95 (0.73, 1.25)

0.72

  1. E&M: Evaluation and Management for complaint of neck pain; CSM: Cervical Spinal Manipulation;
  2. n = number of subjects; CI = confidence interval