TABLE 1.

Associations of Country, Place and Socioeconomic Status with Wait Time From Diagnosis to Initial Cancer-Directed Surgery in Ontario and California: Women with Non-Metastasized Breast Cancer Diagnosed Between 1998 and 2000

	Ontario							California							Ontario vs California
	Days Waited			60+ Days Wait				Days Waited			60+ Days Wait
	n	Mdn	90%kv	Rate	RR*	95%	CI†	n	Mdn	90%kv	Rate	RR*	95%	CI†	MDD	RR	95%	CI†
Province & State	929	11	49	.079				984	8	42	.057				3§	1.39	1.00	1.93
Places
GMT & SFBA	300	13	53	.095	1.00			327	8	43	.055	1.00			5§	1.74	1.52	2.08
Windsor & Modesto	324	11	48	.081	0.85	0.55	1.31	329	10	43	.068	1.23	0.63	2.40	1	1.19	0.71	1.99
Rural places	305	10	43	.068	0.72	0.45	1.14	328	7	41	.051	0.93	0.52	1.67	3	1.33	0.72	2.46
Income Groups
High	314	12	50	.084	1.00			326	7	35	.042	1.00			5§	1.99	1.04	3.80
Middle	305	14	51	.082	0.97	0.35	2.70	330	8	42	.045	1.07	0.73	1.57	6§	1.81	1.09	3.00
Low	310	10	49	.074	0.88	0.48	1.60	328	9	48*	.086	2.05	1.14	3.69	1	0.86	0.49	1.50
Income Groups Within Places
GMT & SFBA
High	143	9	49	.094	1.00			206	7	34	.043	1.00			2	2.19	0.93	5.15‡
Middle	83	17*	56	.102	1.08	0.37	3.14	81	11*	51	.062	1.43	0.45	4.52	6§	1.65	0.66	4.15
Low	74	11	57	.103	1.09	0.70	1.69	40	9	57	.090	2.12	0.84	5.34‡	2	1.14	0.15	8.69
Windsor & Modesto
High	122	12	45	.087	1.00			24	10	28	.042	1.00			2	2.09	0.73	12.53
Middle	92	14	59	.104	1.19	0.20	7.18	142	4	38	.045	1.08	0.51	2.30	10§	2.30	1.00	5.29
Low	110	8	43	.047	0.53	0.21	1.33	163	13	50	.097	2.33	0.70	7.74	−5§	0.48	0.20	1.15‡
Rural Places
High	49	13	49	.062	1.00			96	8	36	.034	1.00			5	1.82	0.33	9.91
Middle	130	10	36	.045	0.72	0.13	4.03	107	9	42	.055	1.62	0.56	4.70	1	0.82	0.28	2.41
Low	126	7	50	.094	1.51	0.49	4.63	125	6	42	.078	2.29	0.85	6.19‡	1	1.21	0.56	2.59

Notes. The pattern of within- and between-country findings was similar for node negative and node positive breast cancer, so they were aggregated in the interest of statistical power. The 10%kv or 10^th percentile was immediate post-diagnostic hospitalization with surgery within 3 days, and this did not differ by country, place or SES so it is not displayed. n = number of incident breast cancer cases, Mdn = median, 90%kv = 90^th percentile, RR = rate ratio, CI = confidence interval, MDD = median days difference, GMT = greater metropolitan Toronto and SFBA = San Francisco Bay Area. Bolded RRs and CIs are statistically significant.

^*A rate ratio of 1.00 is the baseline.

^†Confidence intervals are based on the Mantel-Haenszel chi-square test.

^‡90% confidence interval does not include the null (P < 0.10).

^§Median wait differed significantly from baseline (within-country) or between-countries: Mann-Whitney U-test, P < 0.05.