| Months | Cases | Control | CI 95% | t | DF | p | ||||
| Mean | SD | Mean | SD | SE | Lower | Upper | ||||
| Basic BP | 92.1 | 6.0 | 85.0 | 8.5 | 1.6 | 4.0 | 10.2 | 4.5 | 86 | 0.001 |
| First Month | 90.4 | 8.2 | 85.9 | 9.3 | 1.9 | 0.8 | 8.2 | 2.4 | 86 | 0.018 |
| Second Month | 86.6 | 7.0 | 88.8 | 7.1 | 1.5 | −5.1 | 0.8 | −1.4 | 86 | 0.152 |
| Third Month | 87.9 | 5.6 | 88.2 | 8.0 | 1.5 | −3.3 | 2.6 | −0.2 | 86 | 0.817 |
| Forth Month | 88.1 | 5.7 | 90.2 | 6.8 | 1.3 | −4.7 | 0.6 | −1.5 | 86 | 0.134 |
| Fifth Month | 87.7 | 5.3 | 90.0 | 6.2 | 1.2 | −4.7 | 0.1 | −1.9 | 86 | 0.064 |
| Sixth Month | 87.5 | 5.4 | 90.2 | 6.0 | 1.2 | −5.1 | −0.2 | −2.2 | 86 | 0.032 |
| Seventh Month | 86.8 | 5.2 | 90.4 | 6.1 | 1.2 | −5.9 | −1.1 | −2.9 | 86 | 0.004 |
| Eighth Month | 86.4 | 5.1 | 90.9 | 5.1 | 1.1 | −6.6 | −2.3 | −4.1 | 86 | 0.001 |
| Ninth Month | 86.5 | 5.2 | 91.2 | 5.7 | 1.2 | −7.0 | −2.3 | −4.0 | 86 | 0.001 |
| Tenth Month | 86.5 | 5.2 | 91.2 | 5.5 | 1.1 | −6.9 | −2.4 | −4.0 | 86 | 0.001 |