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Table 3 Factors associated with case notification rate among patients registered from 1997-2011 in Arsi Zone, Oromia Regional State, Central Ethiopia

From: Trends in TB case notification over fifteen years: the case notification of 25 Districts of Arsi Zone of Oromia Regional State, Central Ethiopia

Variables Category Category of case notification COR (95% CI) AOR (95% CI)  
   <120 cases/100,000 >120 cases/100,000   
Residence (N = 39,471) Urban 2,554 (17.5) 11,598 (82.5) 1.00 1.00
Rural 9,310 (36.8) 16,009 (63.2) 0.36 (0.35,0.38)** 0.23 (0.21,0.26)**
Sex (N = 41,583) Male 6,876 (30.2) 15,892 (69.8) 1.00 1.00
Female 5,716 (30.4) 13,099 (69.6) 0.99 (0.95,1.03) 0.99 (0.89,1.06)
Age (N = 41,591) 0-14 years 1,676 (30.0) 3,911 (70.0) 1.00 1.00
15-24 years 4,059 (31.2) 8,942 (68.8) 0.94 (0.88,1.01) 1.19 (1.03,1.38)*
25-49 years 5,387(29.7) 12,729 (70.3) 1.01(0.95,1.08) 1.10 (0.96,1.28)
≥50 years 1,515 (31.0) 3,372 (69.0) 0.95 (0.88,1.04) 1.09 (0.92,1.39)
TB Type (41,919) PTB+ 5,226 (34.0) 10,144(66.0) 1.00 1.00
PTB - 3,904 (25.9) 11,198 (74.1) 1.48 (1.41,1.55)** 1.46 (1.33,1.64)**
Population ratio to DOTS sites in the districts (N = 41,965) EPTB 3,634 (31.7) 7,813 (68.3) 1.11 (1.05,1.17)** 1.49 (1.33,1.6)**
≤ 25,000 1,112 (16.3) 5,713 (83.7) 1.00 1.00
25,001-40,000 8,280 (43.6) 10,713 (56.4) 0.25 (0.24,0.27)** 0.41 (0.36,0.47)**
   3,400 (21.1) 12,747 (78.9) 0.73 (0.68,0.79)** 0.40 (0.35,0.46)**
  1. NB: - * Significant at P-value<0.05 and ** Significant at P-value<0.001.
  2. With the national standard that one health centre with DOTS service can be accessible for 25,000 in TB care, the ratio of population size to the number of DOTS sites was calculated as total number of population in the district divided by number of DOTS sites in the same district. (Total number of population in the District/Total number DOTS sites in the same district).