Table 1 Joinpoint analysis of newly notified TB cases in different geographic regions of China

All provinces

 1997 to 2002

34.69 to 43.58

3.5 (0.3–6.7)

 < 0.001

 2002 to 2005

43.58 to 96.88

28.5 (15.3–43.1)

 < 0.001

 2005 to 2018

96.88 to 59.27

−3.8 (−4.3 to −3.3)

 < 0.001

Eastern provinces

 1997 to 2002

33.23 to 33.13

−0.4 (−3.8–3.1)

0.800

 2002 to 2005

33.13 to 72.06

29.1 (13.4–46.8)

 < 0.001

 2005 to 2018

72.06 to 42.81

−4.3 (−4.8 to −3.7)

 < 0.001

Central provinces

 1997 to 2002

31.03 to 41.04

3.7 (0.6–6.9)

 < 0.001

 2002 to 2005

41.04 to 111.51

36.2 (23.0–50.8)

 < 0.001

 2005 to 2018

111.51 to 59.78

−4.2 (−4.7 to −3.8)

 < 0.001

Western provinces

 1997 to 2002

40.90 to 55.69

6.0 (1.3–10.9)

 < 0.001

 2002 to 2005

55.69 to 121.13

25.0 (6.8–46.2)

 < 0.001

 2005 to 2018

121.13 to 84.13

−3.9 (−5.7 to −2.9)

 < 0.001