| 
      
        | Characteristics | Frequency (%) |  
        | Sex |  
        | Male | 93 (39.0) |  
        | Female | 142(61.0) |  
        | Age    group (years) |  
        | 11-20 | 55 (23.4) |  
        | 21-30 | 123 (52.3) |  
        | 31-40 | 46 (19.6) |  
        | 41-50 | 7 (3.0) |  
        | 51-60 | 4 (1.7) |  
        | Educational background |  
        | Illiterate | 32 (13.6) |  
        | Primary | 25 (10.6) |  
        | Secondary | 131 (55.8) |  
        | Tertiary | 47 (20.0) |  
        | Years in business |  
        | 1-5 | 166 (70.6) |  
        | 6-10 | 24 (10.2) |  
        | 11-15 | 24 (10.2) |  
        | >15 | 21 (9.0) |  
        | Medical examination |  
        | Yes | 131 (55.7) |  
        | No | 104 (44.3) |  
        | Total | 235 (100) |  | 
  
    | Regression and T-test statistical analysis: 95% Confidence interval of difference
    at F cal >F tab (1.776>0.969) and t cal > t tab (6.5>5.0). | 
  
    | Table 1: Socio-demography of food handlers studied in Lagos. |