A Nomogram Model for Mortality Risk Prediction in Pulmonary Tuberculosis Patients Subjected to Directly Observed Treatment Shortcourse (DOTS)

Table 1

Patient clinical characteristics and statistical analysis of the death status.

Variable	Total cases (N = 11207)	Alive (N = 10697)	Died (N = 510)	χ^2 or t	value
Age (years)	49.61 ± 19.99	48.66 ± 19.72	69.44 ± 14.58	30.851	<0.001
Sex
Female	3421	3327 (31.10)	94 (18.43)	36.852	<0.001
Male	7786	7370 (68.90)	416 (81.57)
Ethnicity
Predominant group (Han)	11034	10533 (98.47)	501 (98.24)	0.172	0.697
Ethnic groups	173	164 (1.53)	9 (1.76)
Case classification
New	9107	8739 (81.70)	368 (72.16)	29.089	<0.001
Relapse	2100	1958 (18.30)	142 (27.84)
First sputum bacteria results
Negative/not tested	4794	4660 (43.56)	134 (26.27)	59.444	<0.001
Positive	6413	6037 (56.44)	376 (73.73)
Pulmonary cavity
No	8583	8209 (76.74)	374 (73.33)	3.153	0.076
Yes	2624	2488 (23.26)	136 (26.67)
HIV status
Negative/not tested	11187	10680 (99.84)	507 (99.41)	5.036	0.025
Positive	20	17 (0.16)	3 (0.59)
Drug resistance results
Nondrug resistance	9738	9285 (86.80)	453 (88.82)	1.750	0.186
Drug resistance	1469	1412 (13.20)	57 (11.18)
Patient delay (d)
No	7993	7650 (71.52)	343 (67.25)	4.320	0.038
Yes	3214	3047 (28.48)	167 (32.75)
Diagnosis delay (d)
No	8792	8387 (78.41)	405 (79.41)	0.292	0.589
Yes	2415	2310 (21.59)	105 (20.59)

HIV, human immunodeficiency virus;  < 0.05;  < 0.01.