1. There are 4 groups of patients, separated by study ID:
  1. There is no statistically significant difference for ll37_1borre among groups of patients;
  2. Tukey’s post-hoc pairwise comparisons also shows no difference.
## Analysis of Variance Table
## 
## Response: ll37_1borre
##            Df   Sum Sq Mean Sq F value  Pr(>F)  
## group       3  1028305  342768  2.2065 0.09174 .
## Residuals 104 16156071  155347                  
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
##   Tukey multiple comparisons of means
##     95% family-wise confidence level
## 
## Fit: aov(formula = fit1)
## 
## $group
##           diff        lwr      upr     p adj
## D-C   4.274545 -296.56540 305.1145 0.9999815
## J-C -54.245455 -343.11225 234.6213 0.9610934
## K-C 189.703578  -97.18527 476.5924 0.3152592
## J-D -58.520000 -337.20823 220.1682 0.9468203
## K-D 185.429032  -91.20848 462.0665 0.3033764
## K-J 243.949032  -19.61816 507.5162 0.0801892