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Table 2 Descriptive statistics and post-hoc tests across groups of referrals

From: Factors affecting hospital stay in psychiatric patients: the role of active comorbidity

 

Number referrals

Median

Mean (SD)

U*

Exact Sig.

Z**

Exact Sig.

Schizophrenia

0 referrals

14

16.46 (9.615)

    
 

1 referral

18

21.52 (12.136)

2230a

0.008a

  
 

2 referrals

19.5

20.17 (8.535)

852b

0.013b

1.657b

0.002b

 

3 referrals

27

29.78 (12.804)

374c

0.000c

1.901c

0.000c

Bipolar

0 referrals

14

15.44 (7.641)

    
 

1 referral

14.5

16.25 (8.412)

4614a

0.364a

  
 

2 referrals

19

23.17 (11.111)

756b

0.001b

1.559b

0.003b

 

3 referrals

19

22.50 (10.071)

252c

0.024c

1.011c

0.082c

Both groups

0 referrals (n = 208)

14

15.93 (8.640)

    
 

1 referral (n = 146)

15

18.34 (10.346)

13502a

0.038a

  
 

2 referrals (n = 48)

19.5

21.67 (9.917)

3158b

0.000b

  
 

3 referrals (n = 26)

26

27.54 (12.313)

1234c

0.000c

  
  1. Symbols a no referral vs. one referral b no referral vs. two referrals c no referral vs. three or more referrals * U statistic of Mann Whitney test ** Z statistic of Two-Sample Kolmogorov-Smirnov test.