Table 1

Demographic characteristics of women with lupus by treatment status with cyclophosphamide

	Ever received cyclophosphamide
	Yes		No		p Value
Demographic and clinical characteristics	N=33	22% (%)	N=114	78% (%)	p Value
Age at survey
40–49	22	67	69	61	0.21
50–59	11	33	31	27
60–69	0	0	12	11
70–79	0	0	2	2
Age at diagnosis
20–24	9	27	21	18	0.07
25–29	6	18	28	25
30–34	12	36	23	20
35–39	6	18	42	37
Race/ethnicity
Non-Hispanic white	3	9	24	21	0.29
Non-Hispanic black	27	82	82	72
Other	3	9	8	7
Current marital status
Married	10	30	49	43	0.11
Never married	14	42	27	24
Other*	9	27	37	33
Education
High school or less	4	12	40	36	<0.01
More than high school	29	88	70	64
Annual household income ($)
<20 000	8	26	36	35	0.74
20 000–39 999	6	19	19	18
40 000–69 999	8	26	19	18
≥70 000	9	29	30	29
Insurance
Private	17	59	56	55	0.14
Medicare	9	31	19	19
Medicaid	3	10	26	26
Brief Index of Lupus Damage score
0	4	12	33	29	0.10
1	6	18	20	18
2–3	12	36	42	37
≥4	11	33	19	17
Secondary amenorrhoea before age 40
Yes, not due to a hysterectomy	13	39	19	17	<0.01
No	20	61	95	83