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Table 5 Estimated seasonal variation adjustment per quarter for number of COVID-19 cases in DRC, Nigeria, Senegal, and Uganda

From: Spread and seasonality of COVID-19 pandemic confirmed cases in sub-Saharan Africa: experience from Democratic Republic of Congo, Nigeria, Senegal, and Uganda

Country

Year

Quarter

Adjustment

1

2

3

4

Factor

Nigeria

1

  

10,537

-10,547

 

2

10,556

-10,566

10,575

-10,585

 

3

10,594

-10,603

10,613

-10,622

 

4

10,631

-10,641

10,650

  

Average

10,593.78

-10,603.2

10,593.75

-10,584.4

-0.03472

 

0.034722

0.034722

0.034722

0.034722

 

Adjusted Seasonal Index

10,593.81

-10,603.2

10,593.78

-10,584.4

 

DRC

1

-

-

-247

243

 

2

-239

235

-232

228

 

3

-224

220

-216

213

 

4

-209

205

-201

-

 

Average

-223.94

220.1616

-223.937

227.7188

0.000618

 

-0.00062

-0.00062

-0.00062

-0.00062

 

Adjusted Seasonal Index

-223.941

220.1609

-223.938

227.7182

 

Senegal

1

-

-

1879

-1882

 

2

1886

-1890

1893

-1896

 

3

1899

-1903

1907

-1909

 

4

1913

-1917

1920

-

 

Average

1899.333

-1903.33

1899.75

-1895.89

-0.03472

 

0.034722

0.034722

0.034722

0.034722

 

Adjusted Seasonal Index

1899.368

-1903.3

1899.785

-1895.85

 

Uganda

1

  

-781

767

 

2

-754

739

-725

711

 

3

-697

683

-668

654

 

4

-640

625

-611

  

Average

-696.778

682.5556

-696.333

710.6667

0.027778

 

-0.02778

-0.02778

-0.02778

-0.02778

 

Adjusted Seasonal Index

-696.806

682.5278

-696.361

710.6389

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