Skip to main content

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
  1. *Fisher test.