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Table 2 Findings of univariable analysis

From: The incidence of adverse events in an Italian acute care hospital: findings of a two-stage method in a retrospective cohort study

Univariable analysis
Variable Adverse events no Adverse events yes p
Age    
<1 year 6 (0.4%) 0 (0%) 0.641
1 - 15 years 5 (0.3%) 0 (0%)  
16 - 44 years 346 (23.8%) 7 (15.2%)  
45 - 64 years 380 (26.1%) 12 (26.1%)  
≥ 65 years 718 (49.3%) 27 (58.7%)  
Gender    
Male 766 (52.6%) 27 (58.7%) 0.418
Female 689 (47.4%) 19 (41.3%)  
Residence    
Other Italian Region 77 (5.3%) 0 (0%) 0.109
Lazio 1378 (94.7%) 46 (100%)  
Citizenship    
Italian 1370 (94.2%) 45 (97.8%) 0.292
Foreign 85 (5.8%) 1 (2.2%)  
Marital status    
Not married 286 (19.7%) 6 (13.0%) 0.115
Married 914 (62,8%) 25 (54.3%)  
Separated 41 (2.8% 3 (6.5%)  
Divorced 36 (2.5%) 2 (4.3%)  
Widow 178 (12.2%) 10 (2.7%)  
Lenght of stay 6 (7) 15 (20) <0.001
(median and interquartile range)    
Type of admission (1499)    
Elective 629 (43.3%) 10 (21.7%) <0.001
Emergency 824 (56.7%) 36 (78.2%)  
Referral source (1499)    
Different mode from ordinary admission 4 (0.3%) 0 (0%) <0.001
Emergency Department of the same hospital 800 (55.1%) 32 (69.7%)  
General Practicioner or Specialist 624 (42.3%) 10 (21.7%)  
Transfered form other facility 25 (1.7%) 4 (8.7%)  
Discharge unit    
Medical ward 1153 (79.2%) 33 (71.7%) <0.001
Surgical ward 283 (19.5%) 9 (19.6%)  
Intensive Care Unit 19 (1.3%) 4 (8.7%)  
Charlson Index 0 (1) 0 (1) 0.99
(median and interquartile range)