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Table 1 Crude and adjusted* prevalence rates (%) of three allergic diseases

From: Prevalence and risk factors of childhood allergic diseases in eight metropolitan cities in China: A multicenter study

   Asthma Allergic rhinitis Eczema
  Number Crude prevalence (%)(95% CI ) Adjusted prevalence (%)(95% CI ) Crude prevalence (%)(95% CI ) Adjusted prevalence (%)(95% CI ) Crude prevalence (%)(95% CI ) Adjusted prevalence (%)(95% CI )
Total 22,009 33 (31-36) 33 (31-36) 98 (94-102) 98 (94-102) 55 (52-58) 55 (52-58)
Harbin(4) 2,900 1∙4 (1∙0-1∙9) 1∙7 (1∙0-2∙4) 4∙9 (4∙1-5∙7) 4∙9 (3∙9-5∙8) 5∙3 (4∙5-6∙1) 4∙7 (3∙9-5∙5)
Shanghai(10) 4,395 7∙2 (6∙4-8∙0) 7∙0 (6∙0-7∙9) 12∙9 (11∙9-13∙9) 13∙1 (11∙7-14∙5) 6∙4 (5∙7-7∙1) 6∙5 (5∙4-7∙5)
Guangzhou(4) 3,094 3∙0 (2∙4-3∙6) 3∙0 (2∙4-3∙6) 16∙7 (15∙4-18∙0) 16∙8 (15∙3-18∙2) 5∙3 (4∙5-6∙1) 5∙4 (4∙6-6∙2)
Xi'an(3) 1,653 1∙1 (0∙6-1∙6) 1∙1 (0∙6-1∙7) 3∙9 (3∙0-4∙8) 3∙9 (2∙9-4∙9) 4∙4 (3∙4-5∙4) 4∙4 (3∙4-5∙4)
Wuhan(4) 2,061 3∙6 (2∙8-4∙4) 3∙5 (2∙7-4∙3) 8∙5 (7∙3-9∙7) 8∙3 (7∙1-9∙6) 6∙0 (5∙0-7∙0) 6∙1 (5∙0-7∙2)
Chengdu(5) 2,848 4∙5 (3∙8-5∙3) 4∙6 (3∙8-5∙4) 9∙9 (8∙8-11∙0) 10∙1 (8∙9-11∙2) 4∙2 (3∙5-4∙9) 4∙3 (3∙5-5∙1)
Hohhot(5) 2,025 1∙0 (0∙6-1∙5) 0∙9 (0∙5-1∙4) 5∙4 (4∙4-6∙4) 4∙5 (3∙6-5∙4) 6∙2 (5∙2-7∙2) 6∙4 (4∙9-7∙9)
Urumqi(4) 2,033 1∙5 (1∙0-2∙1) 1∙6 (1∙0-2∙1) 10∙3 (9∙0-11∙6) 10∙1 (8∙6-11∙5) 5∙9 (4∙9-6∙9) 5∙9 (4∙8-6∙9)
**P   <0∙001 <0∙001 <0∙001 <0∙001 <0∙001 <0∙001
  1. Numbers of centers is indicated in brackets next to city name.*Adjusted to the age and gender distribution of the total sample. **P-value for difference between sites.