Table 2 Drug resistance patterns of M.tuberculosis strains isolated from newly diagnosed and previously treated pulmonary TB patients attending two public hospitals in East Gojjam zone, northwest Ethiopia

77 (86.5)

12 (13.5)

89 (100.0)

Resistance to any drug

12 (15.58)

6 (50.0)

18 (20.23)

11.86-28.54

Any INH

2 (2.59)

4 (33.33)

6 (6.74)

1.51-11.89

Any RIF

3 (3.89)

2 (16.67)

5 (5.62)

0.82-10.38

Any EMB

4 (5.19)

2 (16.67)

6 (6.74)

1.51-11.89

Any STM

4 (5.19)

3 (25.0)

7 (7.87)

2.3-13.52

INH alone

0

1 (8.3)

1 (1.12)

0.0-3.27

RIF alone

2 (2.59)

0

2 (2.24)

0.0-5.25

EMB alone

4 (5.19)

1 (8.33)

5 (5.62)

0.82-10.38

STM alone

3 (3.89)

0

3 (3.37)

0.0-7.14

INH + RIF only (MDR)

1 (1.29)

1 (8.33)

2 (2.24)

0.0-5.25

INH + RIF + EMB + STM only

0

1 (8.33)

1 (1.12)

0.0-3.27

INH + STM only

0

2 (16.67)

2 (2.24)

0.0-5.25