Treatment outcomes and factors affecting treatment outcomes of new patients with tuberculosis in Busan, South Korea: a retrospective study of a citywide registry, 2014–2015

Table 3 Treatment outcomes of the study cohort according to baseline characteristics

	Total^a (n = 4732)	Success (n = 3970)	P	Lost to follow-up^b (n = 379)	P	Died (n = 379)	P
Age, years			< 0.001		0.229		< 0.001
0–9	11	10 (90.9)		0 (0.0)		1 (9.1)
10–19	196	187 (95.4)		9 (4.6)		0 (0.0)
20–44	1451	1331 (91.7)		107 (7.4)		10 (0.7)
45–59	1190	1042 (87.6)		106 (8.9)		41 (3.5)
60–74	1117	893 (80.0)		97 (8.7)		127 (11.4)
≥ 75	767	507 (66.1)		60 (7.8)		200 (26.1)
Sex			< 0.001		< 0.001		0.002
Male	2765	2249 (81.3)		264 (9.5)		250 (9.0)
Female	1967	1721 (87.5)		115 (5.8)		129 (6.6)
Nationality			< 0.001		< 0.001		0.009
Korean	4654	3919 (84.2)		352 (7.6)		379 (8.1)
Foreign	78	51 (65.4)		27 (34.6)		0 (0.0)
Type of tuberculosis			0.011		0.018		< 0.001
Pulmonary, smear positive	1464	1193 (81.5)		98 (6.7)		172 (11.7)
Pulmonary, smear negative	2307	1961 (85.0)		186 (8.1)		158 (6.8)
Extrapulmonary	961	816 (84.9)		95 (9.9)		49 (5.1)
Type of institution^c			< 0.001		0.043		< 0.001
Public health centre	551	519 (94.2)		27 (4.9)		4 (0.7)
General hospital^d	3489	2910 (83.4)		298 (8.5)		278 (8.0)
PPM participating	2542	2117 (83.3)		212 (8.3)		210 (8.3)
PPM non-participating	947	793 (83.7)		86 (9.1)		68 (7.2)
Hospital	545	409 (75.0)		40 (7.3)		96 (17.6)
Clinic	147	132 (89.8)		14 (9.5)		1 (0.7)
Number of registrations as TB-positive			< 0.001		0.148		< 0.001
1	3711	3169 (85.4)		284 (7.7)		254 (6.8)
2	849	669 (78.8)		76 (9.0)		104 (12.2)
≥ 3	172	132 (76.7)		19 (11.0)		21 (12.2)
Regional deprivation index (quintile)^e			0.556		0.820		0.201
Q1	1135	85.4 ± 5.6		3.1 ± 2.8		8.0 ± 3.7
Q2	1237	83.7 ± 6.1		2.9 ± 2.0		8.3 ± 5.5
Q3	1213	83.1 ± 6.5		3.9 ± 3.1		8.6 ± 5.6
Q4	729	80.7 ± 12.4		3.7 ± 4.0		10.6 ± 8.8
Q5	344	83.8 ± 11.6		4.1 ± 6.5		5.5 ± 6.0

PPM public-private mix, TB tuberculosis
Data are presented as numbers (%) or means ± standard deviations
^aIncluding four patients whose treatment failed
^bIncluding 208 patients whose treatment outcome was not evaluated
^cType of institution that reported the final treatment outcome
^dThere was no significant difference between PPM participating and non-participating general hospitals in rates of treatment success, loss to follow-up, or death
^en = 4658 (data missing for 74 patients)

ISSN: 1471-2334