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Table 3 Two-way ANOVA analysis of 421 cases and 12 studied items (months)

From: Intraclass reliability for assessing how well Taiwan constrained hospital-provided medical services using statistical process control chart techniques

A. An ideal scenario of homogeneous casesa

Source

SS

d.f.

MS

F

p-value

Hospital

430.96

420

1.03

1.04

0.276

Month

17.964

11

1.63

1.65

0.076

Error

4549.82

4620

0.98

  

Sum

4998.75

5051

   

B. Heterogeneous hospitals out-of-control extracted in year 2000b

Hospital

3044.90

420

7.25

4.38

< 0.001

Month

3915.00

11

355.91

215.13

< 0.001

Error

7643.33

4620

1.65

  

Sum

14603.24

5051

   

C. Heterogeneous hospitals in-control extracted in year 2009c

Hospital

1488.20

420

3.54

1.71

< 0.001

Month

503.22

11

45.75

22.08

< 0.001

Error

9573.44

4620

2.07

  

Sum

11564.86

5051

   
  1. a ICC(3,12) = (1.03-0.98)/1.03 = 0.040.
  2. b ICC(3,12) = (7.25-1.65)/7.25 = 0.772.
  3. c ICC(3,12) = (3.54-2.07)/3.54 = 0.415.