Obs    practice    provider    y    m

  1        1           1       1    4
  2        1           2       0    4
  3        2           1       3    4
  4        3           3       2    3
  5        3           4       3    3
  6        3           7       1    4
  7        4           4       4    4
  8        4           8       3    3
  9        5           1       2    3
 10        5           2       1    1
 11        5           3       1    2
 12        5           4       1    1

Variance Components for Nested Binary Responses (Version 1.1)
(c) Bahjat Qaqish and Habib Moalem (1993)
Department of Biostatistics
CB 7400
Chapel Hill,  NC 27599-7420

Data set: B
Response: y / m
Practice ID: practice

Total number of practices:  5
Total number of physicians: 12
Total number of patients:   36
Sum of y:  22
Mean of y: 0.6111111111

Estimates:
    Theta:    0.6111111111
    Lambda_1: 0.3108445033
    Lambda_2: 0.0528424377

Variance components as percentage of total:
    Between practices:                 31.084450329 %
    Between providers within practice: 3.6416656409 %
    Between patients Within provider:  65.27388403 %

Variance components:
    Between practices:                 0.0738735394
    Between providers within practice: 0.0086545758
    Between patients Within provider:  0.1551262059
    Total variance:                    0.237654321

Correlation:
    Between providers within practice: 0.3108445033
    Between patients within provider:  0.3472611597

Odds ratio:
    Between providers within practice: 3.7539942441
    Between patients within provider:  4.4295061438