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Table 3 Poisson regression analyses of average annual percent change in research production by Africa subregions.

From: Geography of Africa biomedical publications: An analysis of 1996–2005 PubMed papers

 

Model 1 (1996 – 2005)

Model 2 (1996 – 2000)

Model 3 (2001 – 2006)

 

β (SE)

AAPC

P-value

β (SE)

AAPC

P-value

β (SE)

AAPC

P-value

Eastern Africa

0.05 (0.004)

4.6

<0.001

-0.10 (0.013)

-0.9

0.474

0.04 (0.011)

3.9

0.001

Middle Africa

0.14 (0.110)

14.8

<0.001

0.13 (0.037)

13.6

0.001

0.15 (0.027)

15.8

<0.001

Northern Africa

0.12 (0.004)

12.8

<0.001

0.12 (0.013)

12.3

<0.001

0.10 (0.010)

10.7

<0.001

Southern Africa

0.06 (0.003)

6.5

<0.001

0.08 (0.010)

7.8

<0.001

0.06 (0.009)

6.2

<0.001

Western Africa

0.10 (0.004)

10.1

<0.001

0.14 (0.012)

15.3

<0.001

0.08 (0.010)

8.8

<0.001

All

0.08 (0.002)

8.7

<0.001

0.08 (0.006)

8.7

<0.001

0.08 (0.005)

7.9

<0.001

  1. β indicates regression coefficient (trend); SE standard error of β, AAPC average annual percentage change