Table 1 Distribution of characteristics of TB patients according to their M. tuberculosis isolates’ IS6110 RFLP cluster status

 Age (years old)

< 20 years

100

(11.0)

62

(14.4)

38

(8.0)

1

21–30 years

247

(27.3)

115

(26.7)

132

(27.9)

0.53 (0.33–0.85)

31–40 years

220

(24.4)

100

(23.2)

120

(25.4)

0.51 (0.31–0.82)

41–50 years

194

(21.5)

93

(21.6)

101

(21.4)

0.56 (0.34–0.92)

> 50 years

143

(15.8)

61

(14.1)

82

(17.3)

0.45 (0.27–0.76)

 Gender

Female

287

(30.0)

134

(29.0)

153

(31.0)

1

Male

672

(70.0)

327

(71.0)

345

(69.0)

1.08 (0.82–1.42)

 Race

White

190

(30.0)

90

(29.0)

100

(31.0)

1

Black

119

(19.0)

64

(20.0)

55

(17.0)

1.29 (0.81–2.04)

Others^a

323

(51.0)

158

(51.0)

165

(52.0)

1.06 (0.74–1.52)

 Schooling (years)

≤4 years

106

(21.0)

50

(21.0)

56

(22.0)

1

5 to 8 years

304

(61.0)

150

(62.0)

154

(59.0)

1.09 (0.70–1.69)

≥ 8 years

90

(18.0)

41

(17.0)

49

(19.0)

0.93 (0.53–1.64)

 Metropolitan Area

Vitoria

583

(61.0)

290

(63.0)

293

(59.0)

1

Vila Velha

89

(9.0)

40

(9.0)

49

(10.0)

0.82 (0.52–1.29)

Cariacica

120

(13.0)

60

(13.0)

60

(12.0)

1.01 (0.68–1.49)

Serra

123

(13.0)

53

(11.0)

70

(14.0)

0.76 (0.51–1.13)

Outros

44

(5.0)

18

(4.0)

26

(5.0)

0.70 (0.37–1.30)

 X-Ray

No

46

(6.0)

26

(8.0)

20

(5.0)

1

Yes

667

(94.0)

318

(92.0)

349

(95.0)

0.99 (0.96–1.03)

 TB Presentation

PTB^b

779

(81.0)

390

(85.0)

389

(78.0)

1

EPTB

111

(12.0)

40

(9.0)

71

(14.0)

0.56 (0.37–0.84)

PTB + EPTB

69

(7.0)

31

(7.0)

38

(8.0)

0.81 (0.49–1.33)

 AFB Smears Results

Negative

147

(15.0)

65

(14.0)

82

(17.0)

1

Positive^c

802

(85.0)

389

(86.0)

41 3

(83.0)

1.18 (0.83–1.69)

 Spoligotyping

Non LAM

412

(48.0)

195

(50.0)

217

(46.0)

1

LAM

448

(52.0)

193

(50.0)

255

(54.0)

0.84 (0.64–1.10)

 RD^Rio Genotype

Non - RD^Rio

552

(60.0)

253

(58.0)

299

(62.0)

1

RD^Rio

369

(40.0)

185

(42.0)

184

(38.0)

1.07 (0.99–1.15)