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Table 2 Sequential explanatory model for marginal total healthcare expenditures in those with self-reported joint pain and/or arthritis

From: The impact of arthritis and joint pain on individual healthcare expenditures: findings from the Medical Expenditure Panel Survey (MEPS), 2011

Variable

Model 1

Model 2

Model 3

Model 4

Model 5

No reported joint pain and/or arthritis (reference)

–

–

–

–

–

Self-reported joint pain and/or arthritis

$6773*

$4427*

$3980*

$2764*

$1638*

Predisposing factors

 Age, years

  18–24 (reference)

 

–

–

–

–

  25–44

 

$1571*

$1873*

$2381*

$2372*

  45–64

 

$3633*

$3717*

$3224*

$3038*

  65+

 

$6150*

$3510*

$2087*

$1607*

 Race

  Non-Hispanic white (reference)

 

–

–

–

–

  Non-Hispanic black

 

−$883**

−$1053**

−$1325**

−$1287*

  Non-Hispanic other

 

−$543

−$448

−$741

−$136

  Hispanic

 

−$2196*

−$1960*

−$1845*

−$1683*

 Sex

  Male (reference)

 

–

–

–

–

  Female

 

$1053*

$929*

$1272*

$1383*

 Region

  Northeast (reference)

 

–

–

–

–

  Midwest

 

−$149

$78

−$101

−$168.78

  South

 

−$514

−$69

−$458

−$325.85

  West

 

$272

$489

$610

$746.14

 MSA

  Rural (reference)

 

–

–

–

–

  Urban

 

$797**

$1124*

$1216*

$1241*

Enabling factors

     

 Income

   < $25,000 (reference)

  

–

–

–

  $25,000–$49,999

  

−$414

−$293

−$44

  $50,000–$74,999

  

$3

$444

$817

   > $75,000

  

$364

$1487***

$1761**

 Employment

  Not employed (reference)

  

–

–

–

  Employed

  

−$3239

−$2654*

−$2018*

 Education

  Less than high school (reference)

  

–

–

–

  High school

  

$849***

$1566**

$1634*

  College

  

$709

$1242*

$1305*

  Graduate school

  

$1515**

$2493*

$2457*

 Insurance

  Any private (reference)

  

–

–

–

  Public only

  

$1526***

$1639 ***

$947

  No insurance

  

−$3615*

−$3875*

−$3943*

 Marital status

  Married (reference)

  

–

–

–

  Separated/divorced/widowed

  

$63

$34

−$131

  Never married

  

−$55

$79

−$172

Need factors****

     

 Asthma

   

$2428*

$2001*

 Diabetes

   

$3001*

$2669*

 Emphysema

   

$2476***

$1559***

 High blood pressure

   

$938*

$876*

 High cholesterol

   

$1149*

$1194*

 Stroke

   

$2683*

$1727***

 Depression

   

$3182*

$1939*

 CVD

   

$2814*

$2375*

 BMI

  Underweight (reference)

   

–

–

  Normal

   

$726

$1200

  Overweight

   

$388

$732

  Obese

   

$534

$824

Risk factor of interest****

 Any limitations

    

$3308*

 IADL

    

$2488***

 ADL

    

$2284***

 Walk limitations

    

$253

  1. Abbreviations: ADL Activities of daily living, BMI Body mass index, CVD Cardiovascular disease, IADL Instrumental activities of daily living, MSA Metropolitan statistical area
  2. Sequential linear models were used, with each column representing a separate generalized linear model using gamma distribution
  3. * p < 0.001
  4. ** p < 0.01
  5. *** p < 0.05
  6. ****Reference groups compared with those without need factor or risk factor