Table 1 Annual incidence of whooping cough in urban and rural counties by year
From: Geographical differences in whooping cough in Catalonia, Spain, from 1990 to 2010
Year | Rural counties | Urban counties | RR (95% CI) | p value |
|---|---|---|---|---|
1990 | 18.21 | 28.43 | 0.64 (0.54-0.75) | <0.001 |
1991 | 10.86 | 11.67 | 0.93 (0.75-1.14) | 0.50 |
1992 | 13.74 | 18.51 | 0.74 (0.61-0.89) | 0.001 |
1993 | 13.21 | 8.18 | 1.61 (1.32-1.97) | <0.001 |
1994 | 4.25 | 6.59 | 0.64 (0.46-0.89) | 0.007 |
1995 | 2.07 | 3.41 | 0.60 (0.38-0.96) | 0.033 |
1996 | 20.44 | 6.69 | 3.05 (2.56-3.64) | <0.001 |
1997 | 1.95 | 0.86 | 2.24 (1.31-3.83) | 0.002 |
1998 | 0.51 | 0.57 | 0.88 (0.34-2.28) | 0.801 |
1999 | 0.81 | 1.22 | 0.66 (0.31-1.38) | 0.261 |
2000 | 1.80 | 3.36 | 0.53 (0.33-0.87) | 0.010 |
2001 | 0.59 | 0.56 | 1.05 (0.43-2.53) | 0.901 |
2002 | 0.19 | 0.45 | 0.42 (0.09-1.77) | 0.291* |
2003 | 3.27 | 3.65 | 0.89 (0.62-1.28) | 0.552 |
2004 | 1.19 | 3.39 | 0.35 (0.20-0.61) | <0.001 |
2005 | 4.06 | 2.23 | 1.82 (1.30-2.54) | <0.001 |
2006 | 3.18 | 2.17 | 1.46 (1.01-2.11) | 0.039 |
2007 | 3.70 | 4.28 | 0.86 (0.62-1.18) | 0.371 |
2008 | 3.18 | 6.07 | 0.52 (0.37-0.72) | <0.001 |
2009 | 3.36 | 2.84 | 1.18 (0.84-1.65) | 0.321 |
2010 | 5.02 | 4.18 | 1.19 (0.91-1.58) | 0.193 |