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Table 4 Predictors of Length of Stay and Cost of Care for Hospitalizations with a Primary Diagnosis of JDM-

From: Inpatient burden of juvenile dermatomyositis among children in the United States

 

Length of Stay

Cost of Care

LSM

Adj Beta [95% CI]a

p-value

LSM

Adj Beta [95% CI]*

p-value

Age

 0–5

1.72

0 [ref]

–

9.47

0 [ref]

–

 6–10

1.51

−0.22[− 0.34--0.09]

0.001

9.43

− 0.03[− 0.24–0.17]

0.7459

 11–17

1.69

− 0.04[− 0.19–0.12]

0.6417

9.64

0.18[− 0.07–0.42]

0.1536

Season

 Fall

1.62

−0.05[− 0.16–0.06]

0.3442

9.57

0.00[− 0.24–0.23]

0.9674

 Winter

1.67

0 [ref]

–

9.57

0 [ref]

–

 Spring

1.6

−0.07[− 0.15–0.01]

0.0853

9.45

− 0.13[− 0.35–0.09]

0.2514

 Summer

1.66

− 0.01[− 0.11–0.08]

0.7552

9.46

− 0.11[− 0.33–0.10]

0.3131

Gender

 Female

1.64

0.01[− 0.09–0.11]

0.8992

9.54

0.05[− 0.13–0.23]

0.5914

 Male

1.63

0 [ref]

–

9.49

0 [ref]

–

Race

 White

1.38

0 [ref]

–

9.32

0 [ref]

–

 Black

1.55

0.17[− 0.12–0.46]

0.2395

9.44

0.12[− 0.21–0.45]

0.4806

 Hispanic

1.66

0.28 [0.14–0.41]

<.0001

9.62

0.30 [0.05–0.55]

0.0168

 Other

1.96

0.59 [0.31–0.86]

<.0001

9.68

0.36[−0.07–0.79]

0.0993

Insurance

 Medicaid

1.62

0.16 [0.01–0.31]

0.0386

9.32

0.02[−0.21–0.25]

0.8646

 Private insurance

1.46

0 [ref]

–

9.3

0 [ref]

–

 Self-pay

1.7

0.24[−0.07–0.55]

0.1316

9.52

0.22[−0.67–1.10]

0.6276

 No charge

2.11

0.65[−0.06–1.37]

0.0739

10.48

1.18[−0.56–2.93]

0.1833

 Non-Medicaid government program

1.3

−0.16[− 0.29--0.04]

0.0085

8.95

−0.34[− 0.63--0.06]

0.0196

Number of Chronic Conditions

 0–1

1.19

0 [ref]

–

9.06

0 [ref]

–

 2 to 5

1.59

0.41 [0.29–0.52]

<.0001

9.42

0.36 [0.17–0.55]

0.0002

 6+

2.13

0.94 [0.63–1.26]

<.0001

10.07

1.01 [0.39–1.63]

0.0014

Hospital Location

 Metropolitan >1million

1.46

0 [ref]

–

9.52

0 [ref]

–

 Fringe/Metro < 1 million

1.41

−0.04[−0.14–0.05]

0.3704

9.35

−0.17[− 0.36–0.02]

0.0835

 Micropolitan

2.04

0.59 [0.27–0.90]

0.0003

9.87

0.35[−0.20–0.91]

0.2128

 Not metropolitan or micropolitan

1.64

0.19[−0.69–1.07]

0.6753

9.31

−0.20[− 0.98–0.58]

0.6082

Region

 Northeast

1.62

0 [ref]

–

9.35

0 [ref]

–

 Midwest

1.51

−0.10[−0.29–0.09]

0.285

9.63

0.28[−0.04–0.59]

0.0875

 South

1.95

0.34 [0.12–0.56]

0.0024

9.63

0.28 [0.00–0.56]

0.0529

 West

1.47

−0.15[−0.35–0.05]

0.1342

9.44

0.09[−0.17–0.35]

0.5113

Year

 2002–2003

1.79

0 [ref]

–

9.55

0 [ref]

–

 2004–2005

1.64

−0.15[−0.31–0.02]

0.0785

9.44

−0.11[− 0.44–0.23]

0.5253

 2006–2007

1.53

−0.26[− 0.47--0.05]

0.0146

9.34

− 0.21[− 0.57–0.15]

0.2445

 2008–2009

1.73

−0.06[− 0.24–0.11]

0.4759

9.61

0.06[− 0.29–0.40]

0.7548

 2010–2011

1.51

− 0.18[− 0.49–0.14]

0.2666

9.39

−0.16[− 0.52–0.20]

0.3796

 2012

1.61

−0.28[− 0.43--0.13]

0.0003

9.75

0.20[− 0.14–0.54]

0.2469

  1. Missing data was encountered in 74,174 (1.7%) for age, 400,342(10.5%) for season, 96,625 (2.3%) for sex, 1,120,507 (26.2%) for race, 8898, (0.2%) for insurance, 0 (0.0%) for number of chronic conditions, 830,247 (19.7%) for hospital location, 0 (0.0%) for region, and 0 (0.0%) for year
  2. There were no significant differences of missing values for season (p = 0.37), race/ethnicity (p = 0.76), or hospital location (p = 0.14) between hospitalizations with a primary, secondary, or no diagnosis of JDM. LSM least squares mean; 95% CI 95% confidence interval
  3. aCoefficients from regression models of log-transformed LOS or cost of care should be interpreted with caution as the transformed variables are not the same scale as the raw variables
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Pediatric Rheumatology

ISSN: 1546-0096