Table 5.

Multivariate Hazard Ratios (HR) with 95% Confidence Intervals (CI) for Associations with Disease-Specific Survival after Head and Neck Cancer Diagnosis among Asians and Pacific Islanders in California, 1988 to 2007.

Characteristics	Hazard Ratio* (95% Confidence Interval)
Age (years)
<50	1.00 (reference)
50–59	0.99 (0.74–1.34)
60–69	1.27 (1.45–2.39)
70+	1.86 (1.45–2.39)
Sex
Female	1.00 (reference)
Male	0.99 (0.83–1.19)
Year of Diagnosis
1988–1991	1.00 (reference)
1992–1995	0.84 (0.62–1.08)
1996–1999	0.89 (0.70–1.14)
2000–2003	0.83 (0.65–1.06)
2004–2007	0.92 (0.71–1.20)
Marital Status
Married	1.00 (reference)
Never Married	1.24 (0.96–1.61)
Separated/Widowed/Divorced	1.09 (0.89–1.34)
Unknown	0.83 (0.49–1.40)
Neighborhood socioeconomic status (SES)
High SES (Statewide Quintiles 4-5)	1.00 (reference)
Low SES (Statewide Quintiles 1-3)	1.26 (1.08–1.48)
Summary Stage at Diagnosis
Localized	1.00 (reference)
Regional	2.94 (2.39–3.60)
Remote	4.82 (3.78–6.15)
Unknown	3.13 (2.25–4.34)
Tumor Histologic Grade
Well/Moderately Differentiated	1.00 (reference)
Poor/Undifferentiated	1.02 (0.86–1.22)
Unknown	0.81 (0.64–1.02)
Surgery
Yes	1.00 (reference)
No/Unknown	1.63 (1.37–1.93)
Chemotherapy
Yes	1.00 (reference)
No	1.12 (0.92–1.37)
Unknown	1.76 (0.89–3.45)

Estimates are mutually adjusted for all characteristics shown in the table.