Table 2. The LTBI rate differences among male and female subjects among different age groups.

Age (years)	Female				Male					P
	QFT negative (n)	(%)	QFT positive (n)	(%)	QFT negative (n)	(%)	QFT positive (n)	(%)
5–9	41	97.62	1	2.38	55	98.21	1	1.79	0.75(0.05–12.27)	*1.00
10–19	131	99.24	1	0.76	160	98.16	3	1.84	2.46 (0.25–23.89)	*0.6308
20–29	195	94.66	11	5.34	179	93.72	12	6.28	1.19(0.51–2.76)	0.6878
30–39	233	88.59	30	11.41	174	87.00	26	13.00	1.16(0.66–2.03)	0.6025
40–49	624	85.13	109	14.87	449	80.18	111	19.82	1.42(1.06–1.89)	0.0189
50–59	466	78.45	128	21.55	374	69.00	168	31.00	1.64(1.25–2.14)	0.0003
60–69	408	78.46	112	21.54	343	67.25	167	32.75	1.77(1.34–2.34)	<.0001
≥70	262	75.29	86	24.71	151	61.63	94	38.37	1.90(1.33–2.70)	0.0004

Abbreviations: CI, confidence interval; OR, odds ratio; LTBI, latent tuberculosis infection; OR, odds ratio; QFT, QuantiFERON-TB Gold In-TubeQFT;

*Fisher exact test;