Table 1

Summary of linear trend tests for incidence rates of hospitalizations of patients with sarcoidosis (Nationwide Inpatient Sample, 1998–2008)
Trend Difference
Coef. Std. Err. P-Value Coef. Std. Err. P-Value
Age: < 55 3.4783 0.3137 < 0.0001* −5.5510 0.4182 < 0.0001*
Age: > = 55 9.0293 0.2766 < 0.0001*
Race: Black 19.3509 1.4441 < 0.0001* 15.0865 1.4535 < 0.0001*
Race: Non-Black 4.2644 0.1652 < 0.0001*
Gender: Female 6.3568 0.3012 < 0.0001* 0.8158 0.3735 0.0289*
Gender: Male 5.5410 0.2208 < 0.0001*
Payer: Medicaid 1.7254 0.3425 < 0.0001* −5.2582 0.4372 < 0.0001*
Payer: Non-Medicaid 6.9836 0.2718 < 0.0001*

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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