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Table 1 Demographic characteristics of enrolled residents and tuberculosis cases diagnosed by active case finding screening in Yunnan, 2013–2015

From: Role of community-based active case finding in screening tuberculosis in Yunnan province of China

Characteristic

Cumulative enrolled resident(n)

Cumulative tuberculosis diagnosis

(n)

Cumulative

tuberculosis incidence a

χ2

P value

NNS b

Sex

 male

47 515

38

79.9

2.1

0.15

1250

 female

50 006

28

55.9

  

1786

Age (years)

  < 15

19 069

1

5.2

183.0

<  0.01

19 069

 15–34

21 288

6

28.2

  

3548

 35–64

46 147

17

36.8

  

2715

  ≥ 65

11 017

42

381.2

  

262

Occupation

 children/students/teachers

28 534

5

17.5

 

<  0.01ǁ

5707

 farmer/worker

17 897

6

33.5

  

2983

 medical staff

871

0

0.0

   

 government employees

2972

0

0.0

   

 retired

13 534

33

243.8

  

410

 unemployed

26 886

20

74.4

  

1344

 others

6827

2

29.3

  

3414

Education

 no schooling

9031

17

188.2

 

<  0.01ǁ

531

 primary school

23 394

18

76.9

  

1300

 middle school

36 035

20

55.5

  

1802

 high school

16 170

5

30.9

  

3234

 college and above

12 065

6

49.7

  

2011

 missing

826

0

0.0

   

Ethnicity

 Han

89 577

58

64.8

1.39

0.24

1544

 Other minority

7944

8

100.7

  

993

BMI (kg/m2)c

  < 18.5

5573

11

197.4

 

<  0.01ǁ

507

 18.5–24.9

52 990

47

88.7

  

1128

 25.0–29.9

13 720

5

36.4

  

2744

  ≥ 30.0

1435

1

69.7

  

1435

 missing

23 803

2

8.4

  

11 902

  1. a: TB Incidence proportion = new TB cases/population in ACF area× 100 000
  2. b: NNS = number needed to screen to detect one case
  3. c: BMI = body mass index
  4. ǁ Fisher’s exact test