Table II.

Ratio of relative frequencies (RRFs) for demographic, disease, and neighborhood characteristics between female participants in SJLIFE and the evaluable female source population as of October 31, 2011.

	Evaluable female source population (N=1,441)		Female participants (n=884)		RRF	95% confidence limits
	N	%	n	%		Lower	Upper
Individual-level characteristics
Race
White	1239	86.0	761	86.1	1.00	0.98	1.02
Non-White	202	14.0	123	13.9	0.99	0.86	1.11
Age at contact date
18 – 30	652	45.3	397	44.9	0.99	0.94	1.05
31 – 40	537	37.3	338	38.2	1.03	0.96	1.09
≥ 41	252	17.5	149	16.9	0.96	0.87	1.07
Distance from home to SJCRHa (miles)
0 – 100	310	21.5	211	23.9	1.11	1.02	1.20
101 – 250	341	23.7	196	22.2	0.94	0.85	1.02
251 – 500	572	39.7	342	38.7	0.97	0.92	1.03
≥ 500	218	15.1	135	15.3	1.01	0.89	1.12
Age at primary cancer diagnosis
0 – 2	320	22.2	182	20.6	0.93	0.84	1.01
3 – 5	357	24.8	220	24.9	1.00	0.92	1.08
6 – 8	184	12.8	116	13.1	1.03	0.90	1.15
9 – 11	159	11.0	99	11.2	1.01	0.88	1.15
12 – 14	206	14.3	125	14.1	0.99	0.88	1.10
15 – 17	158	11.0	110	12.4	1.13	1.01	1.27
≥ 18	57	4.0	32	3.6	0.92	0.67	1.16
Years from diagnosis to contact date
10 – 14	127	8.8	88	10.0	1.13	0.98	1.28
15 – 19	262	18.2	155	17.5	0.96	0.86	1.07
20 – 24	348	24.2	217	24.6	1.02	0.94	1.09
25 – 29	312	21.7	194	22.0	1.01	0.93	1.10
30 – 34	217	15.1	127	14.4	0.95	0.83	1.07
35 – 39	117	8.1	70	7.9	0.98	0.80	1.14
≥ 40	58	4.0	33	3.7	0.93	0.70	1.16
Disease group
Bone tumors	80	5.6	55	6.2	1.12	0.93	1.32
CNS tumors	102	7.1	57	6.5	0.91	0.73	1.10
Embryonal tumors	297	20.6	163	18.4	0.89	0.80	0.99
Leukemias	607	42.1	400	45.3	1.07	1.02	1.13
Lymphomas	246	17.1	159	18.0	1.05	0.94	1.16
Soft tissue sarcomas	81	5.6	36	4.1	0.72	0.53	0.91
Others	28	1.9	14	1.6	0.82	0.45	1.20
Treatment era
1962 – 1969	59	4.1	35	4.0	0.97	0.73	1.20
1970 – 1979	341	23.7	217	24.6	1.04	0.95	1.12
1980 – 1989	617	42.8	379	42.9	1.00	0.95	1.05
1990 – 2002	424	29.4	253	28.6	0.97	0.91	1.05
Group-level characteristics
Education
≤ High school diploma/general equivalency diploma	1090	75.6	651	73.6	0.97	0.95	1.00
Associate/two-year or Bachelor's or Advanced degree	351	24.4	233	26.4	1.08	1.00	1.16
Median household income
≤ $29,999	245	17.0	132	14.9	0.88	0.78	0.98
$30,000 – $59,999	806	55.9	502	56.8	1.02	0.97	1.06
≥ $60,000	390	27.1	250	28.3	1.04	0.97	1.12
Median home value
≤ $99,999	570	39.6	324	36.7	0.93	0.87	0.99
$100,000 – $149,999	398	27.6	247	27.9	1.01	0.93	1.09
$150,000 – $199,999	245	17.0	161	18.2	1.07	0.97	1.17
≥ $200,000	228	15.8	152	17.2	1.09	0.97	1.19
Urbanicity
Metropolitan area	969	67.2	617	70.0	1.04	1.00	1.07
Micropolitan area	223	15.5	130	14.7	0.95	0.83	1.06
Small town area	161	11.2	94	10.6	0.95	0.81	1.10
Rural area	88	6.1	43	4.9	0.80	0.60	1.00

^aSt. Jude Children’s Research Hospital