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Table 1 Propensity score matching results

From: Does monitoring need for care in patients diagnosed with severe mental illness impact on Psychiatric Service Use? Comparison of monitored patients with matched controls

Before matching
  NN
n = 11677
CNCM
n = 235
  
  mean mean t p
age 40.7
sd = 0.11
42.0
sd = 0.77
-1.65 df = 11910 0.10
# days 1999-2004 that patient received (in- or out-patient) care 720
sd = 6.5
1383
sd = 47.3
-14.24 df = 11910 < 0.001
# in-patient days 1999-2004 170
sd = 4.0
681
sd = 50
-17.7 df = 11910 < 0.001
date of start of care episode in days since 1-1-1960 15624
sd = 6.8
14918
sd = 50.2
14.5 df = 11910 < 0.001
  % % χ 2 p
men 42 60 27.5 df = 1 < 0.001
treatment status at baseline    83.5 df = 2 < 0.001
   new 29 6   
   new episode 11 5   
   persistent care 60 89   
age    4.41 df = 3 0.22
   18-30 years 21 19   
   31-40 years 28 26   
   41-50 years 30 28   
   51-65 years 22 27   
After matching
  NN
n = 612
CNCM
n = 231
  
  mean mean t p
age 42.6
sd = 11.2
42.0
sd = 11.7
0.77 df = 841 0.47
# days 1999-2004 that patient received (in- or out-patient) care 1418
sd = 679
1398
sd = 718
0.37 df = 841 0.71
# in-patient days 1999-2004 696
sd = 776
692
sd = 769
0.07 df = 841 0.95
date of start of care episode in days since 1-1-1960 14886
sd = 736
14904
sd = 763
-0.30 df = 841 0.76
  % % χ 2 p
men 60 60 0.0003 df = 1 0.99
treatment status at baseline    0.03 df = 2 0.99
   new 5 5   
   new episode 5 5   
   persistent 90 90   
age1    1.86 df = 3 0.60
   18-30 years 15 19   
   31-40 years 28 26   
   41-50 years 28 28   
   51-65 years 28 27   
  1. 1 Age was included in the matching procedure as a continuous variable. Categories of age are provided for descriptive purpose only