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Table 1 Results from TB case finding activities in clinics in Accra Metropolis from July 2010 to December 2013

From: Provider initiated tuberculosis case finding in outpatient departments of health care facilities in Ghana: yield by screening strategy and target group

  OPD HIV Diabetes Contacts Total
Indicators 2-week cough >24-hour cough Total >24-hour
cough
>24-hour cough Total Total
Number of facilities 7 3 10 7 2 10  
(A) Number of people screened 1,522,297 1,360,846 2,883,143 57,265 6,866 6,783 2,954,057
(B) Number of presumptive TB patients identified 9,648 11,211 20,859 2,751 495 457 24562
(C) Number of people tested/evaluated for TB disease 8,358 10,100 18,458 2,610 441 381 21890
(D) Number of people diagnosed with all forms of TB 1,259 1,261 2,520 570 25 47 3162
(E) Number of people diagnosed with SS+ TB 787 803 1590 205 14 24 1833
% presumptive TB cases among those screened (B/A) 0.63% 0.82% 0.72% 4.80% 7.21% 6.74% 0.83%
95%CI (0.62-0.65) (0.81-0.84) (0.71-0.73) (4.63-5.00) (6.60-7.82) (6.14-7.33)  
% people tested for TB among presumptive TB patients (C/B) 86.6% 90.1% 88.5% 94.9% 89.1% 83.4% 89.1%
95%CI (86.0-87.3) (89.5-90.6) (88.1-88.9) (94.1-95.7) (86.3-91.8) (80.0-86.8)  
% SS+ TB patients among those tested (E/C) 9.4% 8.0% 8.6% 7.9% 3.2% 6.3% 8.4%
95%CI (8.8-10.0) (7.4-8.5) (8.2-9.0) (6.8-8.9) (1.5-4.8) (3.9-8.7)  
patients with all forms of TB among those screened (D/A) per 100,000 82.7 92.7 87.4 995.4 364.1 692.9 107.0
95%CI (78.1-87.3) (87.6-97.8) (84.0-90.8) (914.1-1076.7) (221.6-506.6) (495.5-890.3)  
SS+TB patients among those screened (E/A) per 100,000 51.7 59.0 55.1 358.0 203.9 353.8 62.1
95%CI (48.1-55.3) (54.9-63.1) (52.4-57.9) (309.1-406.9) (97.2-310.6) (212.5-495.1)  
% SS+ve TB patients among total number of TB patients (E/D) 62.5% 63.7% 63.1% 36.0% 56.0% 51.1% 58.0%
95%CI (59.8-65.2) (61.0-66.3) (61.2-65.0) (32.0-40.0) (36.5-75.5) (36.8-65.4)  
Number Needed to Screen to find one TB patient all forms (NNS1) (A/D) 1209 1079 1144 100 275 144 934
95%CI (1145-1280) (1022-1142) (1101-1190) (93-109) (197-451) (112-202)  
Number Needed to Screen to find one SS+TB patient (NNS2) (A/E) 1934 1695 1813 279 490 283 1612
95%CI (1808-2080) (1584-1821) (1727-1908) (246-324) (322-1029) (202-471)  
  1. >2-week cough – screening approach using a history of cough of 2 or more weeks with or without other TB symptoms; >24-hour cough – screening approach using a history of cough of >24 hours as well a history of any of the following symptoms fever, weight loss and drenching night sweats. 95% CI – 95% Confidence intervals