Table 1.

Summary Statistics for Younger Women With or Without Breast Cancer Aged 18–44 Years, 2006

Variable	Women with breast cancer	Women without breast cancer (before matching)	Women without breast cancer (after matching)	p-value for differences (BC versus matched controls)
Observations (n)	9,912	3,503,113	9,912
Costs ($; M [SE])a
Annualized total costs	27,833 (445)	2,889 (4)	4,831 (165)	< 0.01
Annualized outpatient costs	25,516 (426)	2,212 (3)	3,798 (154)	< 0.01
Annualized inpatient costs	96 (11)	31 (0)	43 (5)	< 0.01
Annualized prescription drug costs	2,221 (66)	645 (1)	989 (29)	< 0.01
Age (years)				0.48
18–23	0.5	18.7	0.5
24–28	5.2	14.6	5.0
29–33	11.6	17.0	11.5
34–38	21.5	20.4	20.6
39–44	61.2	29.3	62.4
Employment				0.19
Employed, full-time	71.0	67.7	72.2
Employed, part-time	1.5	1.8	1.5
Charlson Indexb				0.85
Charlson score of zero	88.8	92.1	88.9
Charlson score of one	9.5	7.0	9.6
Charlson score greater than one	1.6	0.9	1.5
Comorbidities in 2006
Ovarian cancer	0.6	0.1	0.7	0.71
Colorectal cancer	0.3	0.03	0.3	0.69
Lung cancer	0.8	0.02	0.8	0.65
Cervical cancer	0.4	0.3	0.4	0.82
Skin cancer	1.6	0.4	1.6	0.80
Leukemia and lymphoma	0.7	0.1	0.6	0.87
Hypertension	8.1	5.2	8.3	0.57
Dyslipidemia	8.8	5.5	9.3	0.58
Pneumonia	1.2	0.6	1.4	0.55
Asthma	2.8	2.9	2.8	0.72
Depression	5.3	3.9	5.4	0.93
Back problems	15.6	11.1	16.1	0.11
Skin disorders	20.3	13.7	21.1	0.75
Injuries	22.9	14.1	23.4	0.06
Pregnancy	11.8	10.5	12.4	0.85
Arthritis	13.6	8.3	14.2	0.12
Mental health/substance abuse	12.2	9.8	12.3	0.65

Note: Values are percentages unless otherwise noted. Summary statistics are presented for younger women with breast cancer and propensity score–matched comparison sample. Boldface indicates a statistically significant difference from the breast cancer sample (p< 0.05).

State indicator variables were included in the match; none were significantly different than the breast cancer sample at the 5% level.

^aAll costs are per capita and were adjusted to 2012 U.S. dollars.

^bThis Charlson Index excludes cancers.

BC, breast cancer.