Table 4.

Partial Spearman correlations of performance status (PS) period with health care resource utilization^a.

Covariate – combined population	Correlation coefficient
Inpatient days	0.0628
Percentage of PS period as an inpatient	0.0798
Monthly count of claims for emergency room visits	0.0431
Monthly count of claims for physician office visits	0.0846
Days receiving systemic anti-cancer therapy	0.0630
Proportion of PS period receiving systemic anti-cancer therapy	0.0991
Days of with radiation therapy	0.0615
Proportion of PS period receiving radiation therapy	0.0658
Days of inpatient surgical care	0.0114
Percentage of PS period as inpatient surgical care	0.0180
Days of non-surgical inpatient care	0.0635
Percentage of PS period as non-surgical inpatient care	0.0697

^aAdjusted for age, sex, payer, and Charlson Comorbidity Index score using all available PS periods.