Table 2

Summary of linear trend tests for incidence rates of hospitalizations due to a primary diagnosis of sarcoidosis (Nationwide Inpatient Sample, 1998–2008)
Trend Difference
Coef. Std. Err. P-Value Coef. Std. Err. P-Value
Age: < 55 −0.2604 0.0770 0.0007* −0.6434 0.0968 < 0.0001*
Age: > = 55 0.3830 0.0587 < 0.0001*
Race: Black 0.5696 0.3495 0.1032 0.4970 0.3519 0.1579
Race: Non-Black 0.0726 0.0412 0.0780
Gender: Female 0.0423 0.0698 0.5445 0.0406 0.0992 0.6824
Gender: Male 0.0017 0.0705 0.9808
Payer: Medicaid −0.1288 0.1105 0.2438 −0.1776 0.1249 0.1552
Payer: Non-Medicaid 0.0488 0.0583 0.4026

The linear time trend (monthly time index / 1000) is included in all models as a deterministic covariate.

The difference is defined by the slope in the first category minus the slope in the second category.

* indicates significance at 0.05 level.

Gerke et al.

Gerke et al. BMC Pulmonary Medicine 2012 12:19   doi:10.1186/1471-2466-12-19

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