Table 1 |
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|
Number of articles indexed by PubMed from top 20 countries, percentage of Africa publication, relative growth, and Poisson regression analysis of annual percent change: 1996 – 2005 |
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| Number of articles (% within a calendar year) |
Relative growth |
Poisson regression trend analysis |
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|
|
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| 1996 – 2005 |
1996 |
2005 |
(%) |
β (SE) |
AAPC |
P – value |
|
|
|
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| South Africa |
11218 (29.9) |
829 (34.0) |
1536 (28.4) |
85.3 |
0.06 (0.003) |
6.3 |
< 0.001 |
| Egypt |
6557 (17.5) |
414 (17.0) |
956 (17.7) |
130.9 |
0.01 (0.004) |
10.4 |
< 0.001 |
| Nigeria |
4795 (12.8) |
38 (1.6) |
834 (15.4) |
2094.7 |
0.15 (0.005) |
16.3 |
< 0.001 |
| Kenya |
1887 (5.0) |
189 (7.7) |
246 (4.6) |
30.2 |
0.05 (0.008) |
5.5 |
< 0.001 |
| Tunisia |
1027 (2.7) |
27 (1.1) |
267 (4.9) |
888.9 |
0.27 (0.013) |
31.7 |
< 0.001 |
| Zimbabwe |
945 (2.5) |
123 (5.0) |
58 (1.1) |
-52.8 |
-0.09 (0.012) |
-8.5 |
< 0.001 |
| Senegal |
875 (2.3) |
65 (2.7) |
117 (2.2) |
80.0 |
0.04 (0.012) |
3.6 |
0.003 |
| Morocco |
863 (2.3) |
33 (1.4) |
141 (2.6) |
327.3 |
0.14 (0.013) |
15.5 |
< 0.001 |
| Ethiopia |
860 (2.3) |
79 (3.2) |
116 (2.1) |
46.8 |
0.08 (0.013) |
8.1 |
< 0.001 |
| Tanzania |
761 (2.0) |
71 (2.9) |
107 (2.0) |
188.4 |
0.06 (0.013) |
6.4 |
<0.001 |
| Uganda |
761 (2.0) |
43 (1.8) |
124 (2.3) |
50.7 |
0.11 (0.013) |
11.6 |
<0.001 |
| Ghana |
691 (1.8) |
50 (2.1) |
94 (1.7) |
88.0 |
0.06 (0.013) |
5.9 |
<0.001 |
| Ivory coast |
516 (1.4) |
24 (1.0) |
55 (1.0) |
129.2 |
0.04 (0.015) |
4.7 |
0.003 |
| Cameroon |
512 (1.4) |
24 (1.0) |
83 (1.5) |
245.8 |
0.14 (0.016) |
15.2 |
<0.001 |
| Malawi |
450 (1.2) |
34 (1.4) |
57 (1.1) |
67.6 |
0.09 (0.017) |
9.2 |
<0.001 |
| Sudan |
442 (1.2) |
34 (1.4) |
68 (1.3) |
100.0 |
0.08 (0.017) |
9.9 |
<0.001 |
| Guinea |
428 (1.1) |
65 (2.7) |
33 (0.6) |
-49.2 |
-0.03 (0.017) |
-3.3 |
0.044 |
| Burkina Faso |
365 (1.0) |
22 (0.9) |
39 (0.7) |
77.3 |
0.05 (0.018) |
4.9 |
0.009 |
| Eritrea |
337 (0.9) |
34 (1.4) |
54 (1.0) |
58.8 |
0.15 (0.020) |
16.6 |
<0.001 |
| The Gambia |
335 (0.9) |
31 (1.3) |
33 (0.6) |
6.5 |
0.01 (0.019) |
0.8 |
0.669 |
|
|
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|
β indicates regression coefficient (trend); SE standard error of β, AAPC average annual percentage change |
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|
Uthman and Uthman International Journal of Health Geographics 2007 6:46 doi:10.1186/1476-072X-6-46 |
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