Table 3.

Characteristics of 39 previously undetected active tuberculosis cases by HIV status

Characteristic	Total (n = 39) n (%)	HIV-negative (n = 25) n (%)	HIV-positive (n = 13) n (%)	P value
Age, years
Mean ± SD	33 ± 11	33.5 ± 15.6	31.0 ± 8.9	0.560*
Median [IQR]	29 [25–42]	27 [22–39]	29 [26–33]	0.77†
Sex‡	Not 100%
Female	22 (56)	15 (60)	7 (53.9)
Male	17 (44)	10 (40)	6 (46.1)	0.482
AFB smear grade‡
Negative	9 (23.1)	5 (20)	3 (23.1)	0.690
Scanty	13 (33.3)	8 (32)	5 (38.5)
1+	4 (10.3)	2 (8)	2 (15.4)
2+	5 (12.8)	3 (12)	2 (15.4)
3+	8 (20.5)	7 (28)	1 (7.6)
Smear and culture
AFB +, culture +	14 (36)	4 (31)	10 (38)	0.713
AFB +, culture−	16 (41)	6 (46)	10 (38)
AFB−, culture +	9 (23)	3 (23)	6 (24)
Cough duration, weeks
Mean ± SD	15.7 ± 26.9	11.0 ± 14.5	14.7 ± 25.3	0.80*
Median [IQR]	8.7 [3–17.4]	4.3 [2.9–8.7]	4.3 [3–13]	0.60†

^*t-test.

^†Mann-Whitney test.

^‡Stratified totals do not add up to 39 as 1 HIV result was missing.

HIV = human immunodeficiency virus; SD = standard deviation; IQR = interquartile range; AFB = acid-fast bacilli; + = positive; − = negative.