Table 2.
Multivariable-adjusted association of Sjogren’s syndrome with complications and healthcare utilization outcomes after primary THA or primary TKA in the main model and the sensitivity analyses
| Primary TKA | Primary THA | |||
|---|---|---|---|---|
| Main Modela | Sensitivity analysesb | Main Modela | Sensitivity analysesb | |
| Odds Ratio (95% CI) | Odds Ratio (95% CI) | Odds Ratio (95% CI) | Odds Ratio (95% CI) | |
| Discharge to a rehabilitation/inpatient facility | 0.93 (0.86, 1.02) | 0.97 (0.89, 1.06) | 1.13 (1.00, 1.28) | 1.14 (1.01, 1.30) |
| Length of hospital stay > 3 days c | 0.96 (0.88, 1.04) | 0.97 (0.89, 1.05) | 0.99 (0.88, 1.12) | 1.00 (0.89, 1.12) |
| Total hospital charge above the median d | 0.98 (0.91,1.06) | 0.94 (0.87,1.01) | 1.09 (0.98,1.22) | 1.05 (0.93,1.17) |
| In-hospital complications | ||||
| Transfusion | 1.21 (1.10, 1.34) | 1.23 (1.12, 1.36) | 1.37 (1.22, 1.55) | 1.37 (1.21, 1.55) |
| Infection | 1.22 (0.39, 3.78) | 1.21 (0.39, 3.78) | 1.32 (0.44, 4.01) | 1.32 (0.44, 3.92) |
| Revision | 1.41 (0.63, 3.15) | 1.39 (0.62, 3.11) | 1.72 (0.80, 3.72) | 1.73 (0.79, 3.76) |
| Death | 0.98 (0.24, 3.93) | 0.99 (0.25, 3.97) | 0.85 (0.43, 1.70) | 0.86 (0.42, 1.76) |
a Main model was adjusted for socio-demographics (age, race/ethnicity, gender, income), Deyo-Charlson comorbidity index, insurance payer and the underlying diagnosis for primary TKA or primary THA, respectively
b Sensitivity analyses adjusted each main model additionally for hospital characteristics including hospital location/teaching status, hospital region, and hospital bed size
c The median length of hospital stay was 2.7 days for TKA and 2.8 days for THA, both rounded off to 3 days
d Median hospital charges were provided for each calendar year by the NIS:
Primary THA: 1998, $19,717; 1999, $20,514; 2000, $22,333; 2001, $24,189; 2002, $26,729; 2003, $29,858; 2004, $32,607; 2005, $34,615; 2006, $36,164; 2007, $39,675; 2008, $43,064; 2009, $41,602; 2010, $45,186; 2011, $48,898; 2012, $48,927; 2013, $50,827; 2014, $51,482
Primary TKA: 1998, $18,987; 1999, $19,717; 2000, $21,043; 2001, $22,622; 2002, $24,736; 2003, $26,696; 2004, $29,535; 2005, $31,686; 2006, $34,254;2007, $36,356; 2008, $38,920; 2009, $39,681; 2010, $42,191; 2011, $45,616; 2012, $46,438; 2013, $48,248; 2014, $49,330
BOLD indicates significant odds ratio
CI confidence interval