| 
      
        | Gender | Stage I Mean  ±  (S.D) | Stage II Mean  ±  (S.D) | Stage III Mean  ±  (S.D) | Stage IV Mean  ±  (S.D) | F value | P Value |  
        | Males | - | 25.88 ( ± 7.84) | 26.98 ( ± 8.67) | 32.93 ( ± 5.41) | 1.326 | 0.276 (N.S) |  
        | Females | - | 20.35 ( ± 4.17) | 0.0 ± 0.0 | 23.40 ( ± 0.00) | 0.356 | 0.657 (N.S) |  
        | Total | - | 25.47 ( ± 7.72) | 26.98 ( ± 8.67) | 31.02 ( ± 6.33) | 1.059 | 0.355 (N.S) |  |