Table 3 Comparison of the mean values of some of the variables between villages with and those without malaria transmission on a yearly basis, using independent sample t-test ; Sistan-va-Baluchestan province, Iran, (total number of villages 122)
Year | Elevation above sea level (meter) | Percent of houses with nets on windows | Number of households | Proportion of households using ITN | Distance from the nearest malaria diagnosis and treatment post (Kilometer) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Villages without transmission | Villages with transmission | P value (t-test) | Villages without transmission | Villages with transmission | P value (t-test) | Villages without transmission | Villages with transmission | P value* (t-test) | Villages without transmission | Villages with transmission | P value (t-test) | Villages without transmission | Villages with transmission | P value* (t-test) | |
Number mean (SD) | Number mean (SD) | Number mean (SD) | Number mean (SD) | Number mean (SD) | Number mean (SD) | Number mean (SD) | Number mean (SD) | Number mean (SD) | Number mean (SD) | ||||||
2005 | 46 728.4 (577.7) | 76 567.9 (564.3) | 0.133 | 46 35.1 (36.1) | 76 28.9 (33.3) | 0.337 | 46 49.6 (31.2) | 76 89.4 (118.6) | 0.006 | 46 42.7 (37.1) | 76 32.2 (34.3) | 0.115 | 46 13.4 (12.8) | 76 12.6 (13.3) | 0.732 |
2006 | 65 732.4 (564.1) | 57 509.9 (563.3) | 0.031 | 65 33.8 (34.1) | 57 28.3 (34.7) | 0.385 | 65 49.2 (30.6) | 57 103.1 (133.4) | 0.004 | 65 42.4 (35.8) | 57 29.1 (34.3) | 0.038 | 65 14.5 (14.9) | 57 11.1 (10.5) | 0.145 |
2007 | 43 812.0 (581.4) | 79 528.5 (545.4) | 0.008 | 43 41.2 (34.9) | 79 25.8 (33.0) | 0.016 | 43 43.2 (30.8) | 79 91.3 (115.5) | 0.000 | 43 47.2 (37.1) | 79 30.2 (33.6) | 0.011 | 43 14.1 (12.3) | 79 12.2 (13.5) | 0.427 |
2008 | 59 871.6 (536.4) | 63 400.7 (511.1) | 0.000 | 59 45.3 (34.8) | 63 18.0 (34.4) | 0.000 | 59 60.8 (80.3) | 63 87.1 (110.0) | 0.132 | 59 44.7 (38.1) | 63 28.2 (31.4) | 0.009 | 59 15.2 (15.3) | 63 10.8 (10.2) | 0.068 |
2009 | 63 629.0 (576.1) | 59 627.8 (573.3) | 0.990 | 63 30.6 (33.4) | 59 31.9 (35.7) | 0.836 | 63 68.7 (82.7) | 59 80.5 (111.2) | 0.509 | 63 36.7 (36.4) | 59 35.7 (35.1) | 0.875 | 63 14.5 (15.2) | 59 11.2 (10.2) | 0.155 |