TABLE 1

Test results and characteristics of the 45 enrolled patients

Patient	Age years	Disease	Treatments	QFT IU·mL⁻¹	TST mm	CXr^#	Second QFT IU·mL⁻¹	TSPOT^¶ SFU	Second TST mm
TST+/QFT−
1	77	RA	DMARDs	0.01	8	+	0.04	7	ND
2	75	PR	DMARDs+CCS	0.29	10	+	0.01	8	ND
3	67	P	DMARDs	0.01	10	−	0	0	ND
4	73	RA	DMARDs	0.28	25	+	0.15	7	ND
5	69	P	BIO	0	14	−	0	8	ND
6	59	SC	DMARDs+CCS	0.10	20	−	0.05	19	ND
7^ƒ	29	AS	None	0.03	15	−	0.03	34	ND
8^ƒ	50	PA	DMARDs	0	12	+	0	0	ND
9^ƒ	27	JA	DMARDs+CCS	0	8	−	0.05	0	ND
10	51	MS	None	0	6	−	0	0	ND
11	39	RA	DMARDs	0.01	14	−	0.02	0	ND
TST−/QFT+
12	65	PA	BIO	2.40	0	−	0.36	0	0
13	64	PA	DMARDs+CCS	0.49	0	−	0	0	0
14	54	P	None	0.38	0	+	0	0	0
15	64	AS	DMARDs	0.65	0	−	0.01	0	0
16	68	CR	CCS	0.60	0	+	0.19	0	10
17	30	PA	DMARDs	2.83	0	−	1.98	0	0
18	54	MS	CCS	7.05	0	+	IND	0	0
TST−/QFT−/CXr+
19	66	RA	None	0	0	+	0	0	0
20	70	PA	DMARDs	0	0	+	0	0	0
21	69	RA	DMARDs	0	0	+	0	0	6
22	46	BD	DMARDs+CCS	0	0	+	0.52	0	0
23	73	UC	None	0.24	0	+	0.16	17	0
24	79	RA	DMARDs+CCS	0	0	+	0	7	0
25	66	UC	BIO	0.02	0	+	0.02	0	0
26	60	RA+SC	BIO	0.03	0	+	0	0	0
27	35	RA	BIO	0.01	0	+	0	0	0
28	68	RA+SJ	DMARDs+CCS	0	0	+	0.01	0	0
29	63	CR	CCS	0	0	+	IND	0	0
30	70	RA	DMARDs+CCS	0.02	0	+	0.06	0	0
31	44	P	None	0	3	+	0	0	0
32	57	PA	DMARDs	0	0	+	0	0	0
33	70	PA	DMARDs	0.01	0	+	0.04	0	0
34	58	RA	DMARDs	0	0	+	0	0	0
35	67	RA	BIO+DMARDs	0	0	+	0	0	0
36	63	RA	DMARDs+CCS	0	0	+	0.02	0	0
37	75	PA	DMARDs	0	0	+	0.03	0	0
38	71	RA	DMARDs+CCS	0	0	+	0.01	0	0
39	64	RA	CCS	0	0	+	0.01	0	0
40^ƒ	30	CR	None	0	0	+	0.05	0	0
41	67	CR	CCS	0.01	0	+	0	0	0
42	45	CR+AS	None	0.02	0	+	0	0	0
43	77	PA	None	0	4	+	0	0	4
44^ƒ	61	RA	DMARDs	0	0	+	0	0	0
45	67	RA	None	0.11	0	+	0.26	11	0

QFT: QuantiFERON-TB Gold In-Tube (Qiagen, Hilden, Germany); IU: international units; TST: tuberculin skin test; CXr: chest radiograph; TSPOT: T-SPOT.TB (Oxford Immunotec, Abingdon, UK); RA: rheumatoid arthritis; PR: polymyalgia rheumatica; P: psoriasis; SC: scleroderma; AS: ankylosing spondylitis; PA: psoriatic arthritis; JA: juvenile idiopathic arthritis; MS: multiple sclerosis; CR: Crohn's disease; BD: Behçet's disease; UC: ulcerative colitis; SJ: Sjögren's syndrome; DMARDs: disease modifying antirheumatic drugs; CCS: corticosteroids; BIO: biological agents; IND: indeterminate; ND: not done. ^#: with (+) or without (-) findings consistent with previous tuberculosis; ^¶: data are reported as the highest SFU value of ESAT-6 or CFP-10 antigen minus the SFU value of the negative control; ^ƒ: vaccinated with bacille Calmette–Guérin. Positive results are highlighted in bold.