Table 3

Multiple linear regression model relating waiting times between last chemotherapy^* or surgery or biopsy and first radiation therapy (RT) to patients’ characteristics among patients with curable cancers in Ontario (n = 1744)^†

Characteristic	β	p value^‡
Constant	11.09	< 0.001
Age per 10 yr	0.30	0.005
Breast cancer with chemotherapy (yes v. other cancer groups)	−5.50	< 0.001
Cervix cancer (yes v. other cancer groups)	−5.72	< 0.001
Tonsil and larynx cancer (yes v. other cancer groups)	−4.79	< 0.001
Central-East HR (yes v. other regions)	−0.92	0.049
Central-South HR (yes v. other regions)	1.77	< 0.001
Central-West HR (yes v. other regions)	1.09	0.015
East HR (yes v. other regions)	−1.39	0.002
North HR (yes v. other regions)	−2.45	< 0.001
South-West HR (yes v. other regions)	−0.15	0.74
Model R²^§	0.29

HR = health region.
↵* Time between last chemotherapy and first RT for those who received chemotherapy.
↵† 10 patients with missing data were excluded.
↵‡ Significance was set at p < 0.05.
↵§ Adjusted for comorbidity and socioeconomic status.