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Table 4 Generalized estimating equation (GEE) model results predicting receipt of blood glucose testing supplies prescription at 12 months pre-test and posttest, N = 12,949 patients

From: Re-Think the Strip: de-implementing a low value practice in primary care

 

Intercept only & unadjusted model estimates

Adjusted model estimates

 

OR

 

95% CI

OR

 

95% CI

 

Intercept

1.32

 

1.31, 1.32

1.00

 

0.90, 1.10

 

Provider Characteristics (Level 3)

       

Rethink the Strip intervention condition

0.97

**

0.96, 0.99

.

 

.

 

Patient cohort

       

 Original patient cohort (ref)

.

 

.

.

 

.

 

 New patient cohort

0.88

**

0.87, 0.90

.

 

.

Provider Gender

       

 Male (ref)

.

 

.

.

 

.

 

 Female

1.01

 

1.00, 1.02

1.00

 

0.99, 1.02

 

Provider type

       

 MD or DO (ref)

.

 

.

.

 

.

 

 NP

1.01

 

0.99, 1.03

1.01

 

0.99, 1.03

 

 PA

0.97

*

0.95, 0.99

1.00

 

0.98, 1.02

 

 PharmD

0.86

 

0.71, 1.03

0.92

 

0.77, 1.10

 

Provider specialty

       

 Family medicine (ref)

.

 

.

.

 

.

 

 Internal medicine

0.98

*

0.96, 1.00

0.97

*

0.96, 0.99

 

Rural-urban status

       

 Metro– Counties in metro areas of 1 million population or more (ref)

.

 

.

.

 

.

 

 Metro– Counties in metro areas of 250,000 to 1 million population

1.03

*

1.01, 1.04

1.02

*

1.00, 1.04

 

 Metro– Counties in metro areas of fewer than 250,000 population

1.00

 

0.98, 1.02

1.00

 

0.98, 1.02

 

 Nonmetro– Urban population of 20,000 or more, adjacent to a metro area

1.03

 

0.99, 1.07

1.02

 

0.98, 1.06

 

 Nonmetro– Urban population of 20,000 or more, not adjacent to a metro area

1.13

**

1.06, 1.21

1.09

*

1.02, 1.16

 

Patient Characteristics (Level 2)

       

Gender

       

 Male (ref)

.

 

.

.

 

.

 

 Female

1.05

**

1.04, 1.07

1.04

**

1.03, 1.06

 

Age, in years

1.004

**

1.004, 1.005

1.001

*

1.0003, 1.002

 

Race

       

 White (ref)

.

 

.

.

 

.

 

 Black or African American

1.02

*

1.00, 1.04

1.04

**

1.02, 1.06

 

 Other race

0.97

*

0.94, 1.00

1.03

 

0.99, 1.06

 

Ethnicity

       

 Latino or Hispanic (ref)

.

 

.

    

 Non-Latino/Hispanic

1.05

*

1.01, 1.10

1.01

 

0.97, 1.06

 

Body mass index

       

 Underweight

1.13

 

0.97, 1.31

1.12

 

0.97, 1.30

 

 Normal weight (ref)

.

 

.

.

 

.

 

 Overweight

0.98

 

0.95, 1.01

0.99

 

0.96, 1.02

 

 Obese

0.97

*

0.94, 0.99

0.98

 

0.96, 1.01

 

A1C, most recent

1.02

**

1.01, 102

1.01

*

1.00, 1.02

 

Smoking status

       

 Never smoker (ref)

.

 

.

.

 

.

 

 Past smoker

1.02

*

1.00, 1.04

1.01

 

0.99, 1.02

 

 Passive smoker (secondhand smoke)

1.00

 

0.85, 1.17

1.01

 

0.86, 1.18

 

 Smoker

0.98

*

0.96, 1.00

0.99

 

0.97, 1.01

 

 Unknown

0.82

0.66, 1.02

0.84

 

0.68, 1.04

 

Non-insulin diabetes medication (oral or injectable)

       

 Sulfonylurea or glinide

1.13

**

1.11, 1.15

1.07

**

1.05, 1.09

 

 GLP-1 analog, SGLT 2 inhibitor, or DPP-IV

1.10

**

1.09, 1.12

1.09

**

1.07, 1.11

 

 Some other oral medication

1.07

**

1.05, 1.08

1.05

*

1.02, 1.09

 

 No oral medication (ref)

0.92

**

0.91, 0.94

1.02

 

0.99, 1.06

 

Insurance status

       

 Commercial (ref)

.

 

.

.

 

.

 

 Blue Cross Blue Shield, commercial

0.98

0.95, 1.00

0.98

 

0.96, 1.00

 

 Blue Cross Blue Shield, state health plan

1.06

**

1.03, 1.10

1.04

*

1.01, 1.07

 

 Medicaid

1.16

**

1.11, 1.21

1.17

**

1.12, 1.22

 

 Medicare

1.15

**

1.12, 1.17

1.12

**

1.09, 1.14

 

 Other

0.98

 

0.92, 1.04

0.99

 

0.93, 1.05

 

Time (Level 1)

       

 Time period

       

 12 months prior to intervention (ref)

.

 

.

.

 

.

 

 12 months post-intervention

0.96

**

0.95, 0.96

.

 

.

 

Interaction

       

 Rethink the Strip Intervention

0.96

**

0.94, 0.98

0.96

**

0.94, 0.98

 

 Time

0.95

**

0.94, 0.96

0.95

**

0.94, 0.96

 

 Cohort

0.86

**

0.84, 0.88

0.90

**

0.88, 0.92

 

 Rethink the Strip Intervention x Time

1.01

 

1.00, 1.02

1.01

 

1.00, 1.02

 

 Rethink the Strip Intervention x Cohort

1.06

*

1.02, 1.10

1.04

*

1.00, 1.08

 

 Cohort x Time

1.03

**

1.01, 1.04

1.03

**

1.01, 1.04

 

 Rethink the Strip Intervention x Time x Cohort

0.97

*

0.95, 1.00

0.97

*

0.95, 1.00

 
  1. Note: Note: †p < 0.08; *p < 0.05, **p < 0.001; OR = odds ratio; CI = confidence interval
  2. Adjusted model estimates are generated from a single model that includes all variables listed as model covariates