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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