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Table 2 Principal endoscopists over time and diagnostic variation

From: Trends in upper gastrointestinal diagnosis over four decades in Lusaka, Zambia: a retrospective analysis of endoscopic findings

Doctor

Period

n

Children

Candida

Varices

Reflux

OCA

GU

GCA

DU

KS

Normal

1

1977–1980

78

0

0

1 (1)

6 (8)

0

8 (10)

0

12 (16)

0

9 (12)

2

1980–1983

520

9

0

25 (5)

10 (2)

12 (2)

35 (7)

15 (3)

87 (16)

0

63 (13)

3

1980–1985

445

6

6 (1)

14 (3)

2

13 (3)

13 (3)

6 (1)

47 (11)

2

215 (52)

5

1983–1985

347

5

3 (1)

22 (6)

0

15 (4)

44 (13)

5 (1)

15 (4)

0

68 (28)

6

1985–1990

532

7

1 (0.2)

31 (6)

7 (1)

17 (3)

23 (5)

12 (2)

77 (15)

1

183 (38)

7

1988–1998

819

18

51 (6)

22 (3)

86 (11)

10 (1)

29 (4)

8 (1)

62 (8)

3

256 (33)

8

1993–2014

3499

101

202 (6)

220 (7)

63 (2)

115 (3)

210 (6)

110 (3)

398 (12)

24

1502 (50)

9

1995–2010

1199

14

123 (10)

34 (3)

21 (2)

26 (2)

83 (7)

35 (3)

139 (12)

5

353 (31)

10

1997–2014

776

238

48 (6)

46 (6)

29 (4)

12 (2)

29 (4)

8 (1)

62 (8)

1

319 (46)

11

2001–2004

501

8

38 (8)

10 (2)

21 (4)

15 (3)

49 (10)

19 (4)

48 (10)

1

120 (26)

12

2003–2014

1244

33

112 (9)

37 (3)

75 (6)

61 (5)

83 (7)

65 (5)

43 (4)

8

342 (32)

13

2007–2014

2587

50

83 (3)

176 (7)

2

60 (2)

212 (9)

49 (2)

170 (7)

1

1333 (59)

14

2006–2014

730

4

46 (3)

23 (3)

31 (4)

45 (6)

73 (11)

16 (2)

36 (5)

1

246 (41)

15

2011–2014

1107

6

35 (3)

41 (4)

13 (1)

87 (8)

117 (12)

36 (3)

65 (6)

6

519 (56)

16

2011–2012

701

9

54 (8)

17 (3)

0

20 (3)

70 (10)

20 (3)

59 (8)

0

365 (57)

  1. Percentages are shown in brackets, where % ≥1.0. Endoscopies performed by doctors who carried out less than 500 are not shown unless they were the sole endoscopists over a period of one or more years (see Fig. 1). Findings differed by endoscopist for all disorders (P < 0.0001 for all, except for KS where P = 0.003). Variation in the length of time contributed reflects the contributions made by some volunteers on short term contracts, some recent trainees who now contribute to the service regularly, and two deaths among endoscopists in the 1990s. Trainees’ reports are always signed by the supervising doctor and are not reflected in this table until deemed ready for independent endoscopy