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Table 3 Factors associated with indeterminate (ID) status on first post treatment MRI (ptMRI)

From: Utility of magnetic resonance imaging in determining treatment response and local recurrence in nasopharyngeal carcinoma treated curatively

Variable

Univariate analysis

OR

95% CI

P

Age

1.00

0.99–1.03

0.343

Gender:

 Female

1.57

0.89–2.76

0.119

 Male (Ref)

1

  

T stage:

 T1

0.98

0.54–1.77

0.934

 T2

0.88

0.36–2.15

0.779

 T3

1.02

0.53–1.95

0.964

 T4 (Ref)

1

  

N stage:

 N0

1.38

0.57–3.33

0.478

 N1

1.71

0.82–3.59

0.154

 N2

1.90

0.91–3.97

0.087

 N3 (Ref)

1

  

AJCC Stage:

 Stage I

0.74

0.30–1.81

0.509

 Stage II

1.04

0.52–2.06

0.919

 Stage III

1.33

00.75–20.37

0.329

 Stage IV (Ref)

1

  

Treatment modality:

 RT alone

0.90

0.45–1.79

0.759

 ChemoRT

   

Time to first ptMRI (days)

 75–105

2.13

1.16–4.12

0.024

 106–135 (Ref)

1

  
  1. OR Odds Ratio, CI Confidence Interval, AJCC American Joint Committee on Cancer, RT Radiotherapy, Ref Reference
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