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Table 5 Factors Associated with Highest Direct Healthcare Expenditures in Previous Six-Monthsa

From: The association between insurance coverage for insulin pen needles and healthcare resource utilization among insulin-dependent patients with diabetes in China

Parameter

Odds Ratio

95% CI

p-value*

Age (year)

0.95

0.92, 0.98

0.0006

Sex

 Male

0.98

0.55, 1.75

0.9382

 Female (ref)

--

--

 

Education Level

 High School and Below

0.77

0.37, 1.59

0.4810

 Bachelor’s Degree and Above (ref)

--

--

 

Type of Insurance

 Urban Employee Medical Insurance*

--

--

--

 Urban Resident Medical Insurance

1.72

0.82, 3.63

0.8539

 New Rural Cooperation Medical Insurance

1.71

0.65, 4.49

0.8882

 Free medical service

1.00

0.32, 3.14

0.3535

 Other

2.23

0.31, 16.17

0.6961

 >  1 type

2.64

0.50, 14.03

0.4922

Income

 No income (ref)

--

--

--

 3000 RMB or below

1.30

0.44, 3.81

0.4037

 Above 3000 RMB

0.96

0.28, 3.33

0.6926

Subject has some level of PN Reimbursement

 Yes (ref)

--

--

--

 No

4.56

2.14, 9.75

< 0.0001

Type of Diabetes

 Type 1 (%) (ref)

--

--

--

 Type 2 (%)

0.64

0.23, 1.85

0.4133

Duration of diabetes

0.96

0.91, 1.01

0.1311

Duration of insulin

1.03

0.95, 1.12

0.4174

Hypoglycemia frequency in previous six months

 None (ref)

   

 1 to 2

--

--

--

 3 or more

1.12

0.56, 2.25

0.5576

 

1.84

0.97, 3.48

0.0624

BMI

1.09

1.00, 1.20

0.0558

Presence of CVD

1.84

0.98, 3.48

0.0598

Presence of hyperlipidemia

1.67

0.86, 3.24

0.1300

Retinopathy

2.08

1.13, 3.85

0.0195

Nephropathy

0.90

0.41, 2.00

0.7983

Neuropathy

2.92

1.56, 5.49

0.0009

Other complication

1.03

0.35, 3.05

0.9578

  1. *p-values < 0.05 were considered significant
  2. aTotal costs under the 75th percentile of costs were considered to be low costs; costs at and above the 75th percentile were considered to be high costs; The cut-off point was based upon the distribution of costs in the data.
  3. BMI Body mass index, CI Confidence interval, CVD Cardiovascular disease, OR Odds ratio, ref. reference group