Table 3.

Multivariate Analysis of Trend in ICU Use in Last 6 Months of Life^*

Variables	Model 1	Model 2
Year of death (each increasing year)	1.052 (1.044–1.060)	1.066 (1.058–1.075)
Age at death (each increasing year)		0.970 (0.966–0.973)
Gender
Male		1.0
Female		0.965 (0.918–1.015)
Race
Non-Hispanic white		1.0
Black		1.070 (0.985–1.162)
Hispanic		1.380 (1.216–1.565)
Others		1.291 (1.154–1.444)
Low socioeconomic status
No		1.0
Yes		1.094 (1.025–1.167)
Teaching hospital
No		1.0
Yes		1.078 (1.021–1.167)
Cause of death
Other than lung cancer		1.0
Lung cancer		0.697 (0.655–0.742)
Comorbidity score
0		1.0
1		1.200 (1.124–1.281)
≥ 2		1.622 (1.525–1.7425)
Married
No		1.0
Yes		1.119 (1.063–1.179)
Place of residence
Nonlarge metropolitan area		1.0
Large metropolitan area		1.556 (1.479–1.636)
AJCC stage
IIIB		1.0
IV		0.685 (0.652–0.720)
Chemotherapy use
No		1.0
Yes		0.915 (0.869–0.964)

^*Values are presented as odds ratio (95% confidence interval). Model 1 = unadjusted odds of ICU use in the last 6 months of life by death year; model 2 = model 1 + age at death, gender, low socioeconomic status, cause of death, comorbidity score, marital status, AJCC stage, race, place of residence, chemotherapy use, and major medical school affiliation. See Table 1 for abbreviation not used in the text.