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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.