Table 2.
Summary of sampling population, survey participants and screening outcomes
| Country | Timeframe of field operations |
Planned sample size |
Number of people eligible to participate |
Survey participants |
Number and percentage of participants eligible for sputum examination |
||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number | Participation rate (%) |
Symptom positive, chest X-ray positive |
% | Symptom positive, chest X-ray negative/ N/A |
% | Symptom negative, chest X-ray positive |
% | Other† | % | Any symptom positive |
% | Any chest X-ray positive |
% | Total eligible |
% | ||||
| Ethiopia | 2010–2011 | 46 514 | 51 667 | 46 697 | 90% | 806 | 1.7% | 2220 | 4.8% | 3013 | 6.5% | 41 | 0.09% | 3026 | 6.5% | 3819 | 8.2% | 6080 | 13% |
| Gambia | 2011–2013 | 55 281 | 55 832 | 43 100 | 77% | 1026 | 2.4% | 2436 | 5.7% | 2384 | 5.5% | 102 | 0.24% | 3462 | 8.0% | 3410 | 7.9% | 5948 | 14% |
| Ghana | 2013 | 63 905 | 67 757 | 61 726 | 91% | 771 | 1.2% | 1198 | 1.9% | 4387 | 7.1% | 1942 | 3.1% | 1969 | 3.2% | 5158 | 8.4% | 8298 | 13% |
| Kenya | 2015–2016 | 72 000 | 76 291 | 63 050 | 83% | 1241 | 2.0% | 2896 | 4.6% | 5184 | 8.2% | 394 | 0.62% | 4137 | 6.6% | 6425 | 10% | 9715 | 15% |
| Malawi | 2013–2014 | 37 200 | 39 026 | 31 579 | 81% | 381 | 1.2% | 2334 | 7.4% | 717 | 2.3% | N/A | N/A | 2715 | 8.6% | 1098 | 3.5% | 3432 | 11% |
| Nigeria | 2012 | 49 000 | 77 797 | 44 186 | 57% | 746 | 1.7% | 1720 | 3.9% | 2222 | 5.0% | N/A | N/A | 2466 | 5.6% | 2968 | 6.7% | 4688 | 11% |
| Rwanda | 2012 | 44 500 | 45 058 | 43 128 | 96% | 545 | 1.3% | 2092 | 4.9% | 2107 | 4.9% | 3 | 0.01% | 2637 | 6.1% | 2652 | 6.1% | 4747 | 11% |
| Sudan | 2013–2014 | 91 131 | 96 979 | 83 202 | 86% | 1823 | 2.2% | 840 | 1.0% | 9838 | 12% | 5040 | 6.1% | 2663 | 3.2% | 11 661 | 14% | 17 541 | 21% |
| Uganda | 2014–2015 | 40 180 | 45 293 | 41 154 | 91% | 552 | 1.3% | 2162 | 5.3% | 2298 | 5.6% | 130 | 0.32% | 2714 | 6.6% | 2850 | 6.9% | 5142 | 12% |
| Tanzania | 2011–2012 | 46 792 | 65 664 | 50 447 | 77% | 804 | 1.6% | 3459 | 6.9% | 2039 | 4.0% | N/A | N/A | 4263 | 8.5% | 2843 | 5.6% | 6302 | 12% |
| Zambia | 2013–2014 | 54 400 | 54 830 | 46 099 | 84% | 1505 | 3.3% | 2948 | 6.4% | 2255 | 4.9% | N/A | N/A | 4453 | 10% | 3760 | 8.2% | 6708 | 15% |
| Zimbabwe | 2014 | 44 951 | 43 478 | 33 736 | 78% | 628 | 1.9% | 1205 | 3.6% | 2803 | 8.3% | 1184 | 3.5% | 1833 | 5.4% | 3431 | 10% | 5820 | 17% |
| Total | 83% | 1.8% | 4.7% | 6.2% | 1.7% | 6.5% | 8.0% | 14% | |||||||||||
N/A, not applicable.
†
Other refers to criteria used to ascertain if a participant was eligible for sputum collection other than via symptom or chest X-ray screening. See Text S2 for specific details.