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Table 2 Characteristics of cases and controls, and number of visits to the emergency department, univariate odds ratio (OR), 95% confidence intervals, and p-values

From: Number of visits to the emergency department and risk of suicide: a population- based case–control study

 

Cases (n = 152)

Controls (n = 1520)

  
 

N (%)

N (%)

OR (95% CI)

p-value

Age

    

Mean (standard deviation)

42 (15)

43 (18)

1.00 (0.99-1.01)

0.79

Median, IQR (Lower, Higher)

43 (29, 53)

39 (27, 56)

  

Gender

    

Male

103 (68)

817 (54)

1.00 Referent

 

Female

49 (32)

703 (46)

0.55 (0.39-0.79)

0.001

Number of visits

    

1

49 (32)

869 (57)

1.00 Referent

 

2

21 (14)

335 (22)

1.11 (0.66-1.88)

0.69

3

22 (14)

163 (11)

2.39 (1.41-4.07)

0.001

4

18 (12)

71 (5)

4.50 (2.49-8.13)

<0.001

5

6 (4)

28 (2)

3.80 (1.50-9.61)

0.005

6

7 (5)

20 (1)

6.21 (2.51-15.38)

<0.001

7

7 (5)

12 (1)

10.35 (3.90-27.44)

<0.001

8

6 (4)

3 (0)

35.47 (8.61-146.08)

<0.001

9

3 (2)

3 (0)

17.74 (3.49-90.15)

0.001

10 or more

13 (9)

16 (1)

14.41 (6.56-31.64)

<0.001