Table 1 Chi-square test result of trends of hypertension across the time series, Nigist Eleni Mohammed general Hospital, Hossana (December 2010- January 2014)
| Year | Observations | Sum of ranks |
|---|---|---|
| 2010 | 530 | 140715 |
| 2011 | 456 | 345876 |
| 2012 | 326 | 374737 |
| 2013 | 68 | 91562 |
| 2014 | 527 | 866388 |
| Total | 1907 |