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Table 2 Number and frequency of visits, to ER of the Hospitals Vittorio Emanuele, Cannizzaro and Garibaldi in Catania, for some acute affections

From: A retrospective study on acute health effects due to volcanic ash exposure during the eruption of Mount Etna (Sicily) in 2002

Visits to ER – observation period 20/10 - 05/11 Differ Value P
City of Catania Year 2001 Year 2002
N. acute affect.upper resp. tract (% tot.) 262 (2,14) 353 (3.41) (+1,27) p <0,01
N. acute affect. lower resp. tract (% tot.) 256 (2,09) 350 (3,38) (+1,29) p <0,01
N. heart diseases (% tot.) 182 (1,49) 287 (2,78) (+1,29) p <0,01
N. neuropsychiatric disorders (% tot.) 139 (1,14) 116 (1,12 ) (−0,02) NS
N. ocular affections (% tot.) 292 (2,39) 409 (3,96) (+1,57) p <0,01
N. skin diseases (% tot.) 106 (0,86) 86 (0,83) (−0,03) NS
N. surgical diseases and orthopedic (% tot.) 1157 (9,46) 1048 (10,14) (+0,68) NS
Total diseases 2394 (1,96) 2649 (2,56) (+0,60)  
Number of visits for all diseases (total) 12.230 10.337   
  1. Legend:
  2. p < 0,01 highly significant difference.
  3. p < 0,05 statistically significant difference.
  4. p > 0,05 not significant difference.