Table 2. Sputum conversions after one and two months of DOT for pulmonary tuberculosis and their associated factors (Oman TB study 2007).
| N = 112 | At end of one month (n= 39) |
At end of two months (n= 49) |
Validation | ||
|---|---|---|---|---|---|
| Number | Percent | Number | Percent | ||
| Total | 39 | 34.8 | 49 | 43.7 | |
| Sex Male Female |
21 18 |
53.8 46.2 |
23 26 |
46.9 53.1 |
RR = 1.17 95% CI (0.73 – 1.87) |
| Age group <20 years 21 to 40 41 to 60 61 and + |
13 15 8 3 |
46.4 35.7 23.5 37.5 |
11 20 14 4 |
22.4 40.8 28.6 8.2 |
c 2 = 1.354 df = 3 P =0.67 |
| Wilayat Muscat Muttrah Bausher Seeb Amerat Quriyat |
4 15 4 10 1 5 |
8.0 31.3 8.0 29.5 10.7 12.5 |
3 16 4 12 7 7 |
8.0 31.3 8.0 29.5 10.7 12.5 |
c 2 = 4.11 df = 5 P = 0.53 |
| History of smoking Yes No |
9 30 |
23.1 76.9 |
11 38 |
22.4 77.6 |
RR = 1.02 95% CI (0.59 – 1.77) |
| Diabetes No Yes but controlled Yes but uncontrolled Diabetes |
32 1 6 |
82.1 2.6 15.4 |
36 1 12 |
73.5 2.0 24.5 |
RR = 1.12 95% CI (0.89 – 1.40) |
| Lung involvement Unilateral Bilateral |
20 19 |
51.3 48.7 |
23 26 |
46.9 53.1 |
RR = 1.10 95% CI (0.69 – 1.76) |
| Cavity in lung Present Absent |
13 26 |
33.3 66.7 |
30 19 |
61.2 38.8 |
RR = 0.52 95% CI (0.31 – 0.88) |
| Duration of symptoms <1 month 1 to 2 2 to 3 4 to 5 5 + months |
22 10 5 1 1 |
56.4 25.6 12.8 2.6 2.6 |
16 21 7 2 3 |
32.7 42.9 14.3 4.1 6.1 |
c 2 = 5.45 df = 4 P =0.24 |
| Bacilli Load One plus Two plus Three plus |
16 10 13 |
41.0 25.6 33.3 |
4 7 38 |
8.2 14.3 77.6 |
c 2 = 19.1 df = 2 P =0.00007 |
| ESR <50 mm /1hr ³ 50 mm /1hr |
10 29 |
25.6 48.7 |
8 40 |
16.3 40.8 |
RR = 1.54 95% CI (0.67 – 3.52) |
ESR: Erythrocyte sedimentation rate