Table 1.
Quarterly summary of total TB cases from July 2010 through June 2016.
Fig 1.
Seasonal trends of TB case notified from agrarian regions of Ethiopia, July 2010-June 2016.
Months: Jul = July; Sep = September; Oct = October; Jan = January; Mar = March; Apr = April; Jun = June.
Fig 2.
A sequence chart for original series and trend, seasonal, and irregular components,2010–2016.
Quarters: Q1 is the first quarter (July-September); Q2 is the second quarter (October-December); Q3 is the third quarter (January-March) and Q4 is the fourth quarter (April-June) A. the original quarterly time series; B. is the decomposed time series into the trend cycle; C. is a seasonal trend; and D. is an irregular components.
Fig 3.
PAF of the quarterly notified TB cases from 2010–2016 with a peak at a lag of 3.
ACF: autocorrelation function; PAF: Partial autocorrelation function.
Table 2.
Comparison of seasonal amplitude of TB cases among different groups.
Fig 4.
A seasonal time series TB case notification and forecast of Amhara, Oromia and the total.