An n-of-1 Trial Service in Clinical Practice: Testing the Effectiveness of Liuwei Dihuang Decoction for Kidney-Yin Deficiency Syndrome

Table 4

Repeated measure of individual Likert score.

Source	Sum of squares	df	Mean square	𝐹	𝑃
Group	5.121	1	5.121	0.267	0.607
Pair	329.199	2	164.599	30.478	0.000
Group * pair	2.433	2	1.216	0.225	0.789
Error (group)	1766.681	92	19.203
Error (pair)	993.702	184	5.401

Test statistics of Mauchly’s test of sphericity: 𝑊=0.954, 𝑃=0.117. Individual Likert score improved significantly in different pair. No significant differences between LDD and placebo. No interaction between group and pair.