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Table 4 Characteristics that predict use of molecular tests among lung cancer patients

From: Underutilization and disparities in access to EGFR testing among Medicare patients with lung cancer from 2010 – 2013

Variable

OR

P Value

95% CI

Demographic characteristics

 Age (per year)

0.99

0.00

0.99–0.99

 Asian (vs. White)

1.63

0.00

1.53–1.79

 Black (vs. Whites)

0.95

0.05

0.92–0.99

 Hispanic (vs. Whites)

0.87

0.03

0.78–0.99

 Female (vs. Whites)

1.18

0.00

1.16–1.21

 Medicaid recipient (vs. all others)

0.74

0.00

0.72–0.77

 Distance to NCI Cancer Center (per mile)

0.99

0.00

0.99–0.99

 Number of lung cancers patient in HRR

0.99

0.01

0.99–0.99

Clinical characteristics (vs. all others)

 Transcatheter biopsy

2.54

0.00

2.49–2.60

 TBNA

1.53

0.00

1.48–1.59

 Inpatient stay

1.48

0.00

1.45–1.51

 Thoracoscopy

1.42

0.00

1.36–1.48

 Mediastinoscopy

1.35

0.00

1.30–1.41

 EBUS

1.32

0.00

1.27–1.38

 Bronchoscopy

1.24

0.00

1.21–1.27

 Open surgery

1.17

0.00

1.13–1.22

 VATS

1.14

0.00

1.09–1.20

 Year identified

1.09

0.00

1.09–1.12

 HCC risk score

0.77

0.00

0.76–0.78

Regional characteristics

 Distance to NCI Cancer Center

0.99

0.00

0.99–0.99

 Number of lung cancer patient in HRR

0.99

0.01

0.99–0.99

20 HRRs with increased likelihood of testing

 Boston, MA

4.94

0.00

1.67–14.62

 Los Angeles, CA

4.94

0.00

2.08–11.71

 East Long Island, NY

4.25

0.00

1.92–9.43

 Manhattan, NY

2.99

0.00

1.69–5.31

 Fort Lauderdale, FL

2.89

0.00

2.12–3.95

 Philadelphia, PA

2.67

0.00

1.50–4.76

 Camden, NJ

2.57

0.00

1.48–4.48

 Orlando, FL

2.25

0.01

1.21–4.20

 Anchorage, AK

2.21

0.00

1.29–3.77

 Springdale, AR

2.08

0.03

1.09–4.00

 Houston, TX

1.93

0.01

1.14–3.24

 Atlanta, GA

1.83

0.04

1.02–3.30

 St. Louis, MO

1.71

0.03

1.04–2.79

 Pittsburgh, PA

1.66

0.01

1.13–2.43

 Nashville, TN

1.59

0.00

1.31–1.93

 Miami, FL

1.49

0.00

1.23–1.80

 Columbus, OH

1.44

0.00

1.17–1.76

 Seattle, WA

1.39

0.01

1.09–1.76

 Fort Myers, FL

1.37

0.03

1.03–1.82

 Kansas City, MO

1.32

0.00

1.12–1.55

20 HRRs with lowest likelihood of testing

 Cape Girardeau, MO

0.26

0.00

0.12–0.56

 Binghamton, NY

0.25

0.00

0.12–0.54

 St. Cloud, MN

0.25

0.00

0.10–0.61

 La Crosse, WI

0.24

0.00

0.10–0.57

 Corpus Christi, TX

0.24

0.00

0.11–0.51

 San Angelo, TX

0.24

0.00

0.09–0.59

 Abilene, TX

0.23

0.00

0.10–0.51

 Covington, KY

0.23

0.00

0.10–0.50

 Longview, TX

0.22

0.00

0.09–0.53

 Slidell, LA

0.21

0.00

0.09–0.53

 Grand Forks, ND

0.21

0.00

0.09–0.53

 Tuscaloosa, AL

0.21

0.00

0.09–0.48

 Wichita Falls, TX

0.20

0.00

0.08–0.47

 Sayre, PA

0.18

0.00

0.07–0.46

 Texarkana, AR

0.16

0.00

0.07–0.38

 Idaho Falls, ID

0.16

0.00

0.05–0.48

 Alexandria, LA

0.15

0.00

0.06–0.34

 Rochester, MN

0.15

0.00

0.06–0.35

 Rome, GA

0.12

0.00

0.05–0.28

 Mason City, IA

0.10

0.00

0.04–0.30

  1. Abbreviations: VS versus, OR Odds ratio, CI Confidence Interval, HCC hierarchical condition categories, HRR Hospital referral regions, TBNA transbronchial needle aspiration, VATS video-assisted thoracic surgery, EBUS endobronchial ultrasound
  2. Source: RTI analysis of 2011–2013 Medicare claims data
  3. Reference groups: Race/ethnic groups, Medicaid status, and clinical characteristics were dichotomous variables
  4. Reference group for HRR is Birmingham, Alabama which had the median percentage of patients tested (8%)