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5.8 RESULTS, INTERPRETATION AND DISCUSSION 113

Period Period
Techni.. BaseLine 1 month 3 months 6 months 12 months BaseLine
12 1 month
Trend line 3 months
6 months
10
12 months
8 1
2 3
EMGa TTH-intensity ----> 6 4 Average 4 5 6

8 7
2 9
10
0 11
12
13
–2
12 14
15
10 16
17
18
8
19
20
TTH-intensity ----> 6 21
22
GSRa 4 Average 23
24
26
2 25
27
0
–2 Average Average Average Average Average
0 10 20 0 10 20 0 10 20 0 10 20 0 10 20
TTH-duration (in h) ----> TTH-duration (in h) ----> TTH-duration (in h) ----> TTH-duration (in h) ----> TTH-duration (in h) ---->
FIG. 5.12
Correlation between TTH: duration and intensity.

The baseline data for both the groups showed high TTH intensity and high TTH duration and the
correlation between these parameter was observed as high. After applying the different trend models
such as linear, logarithmic, exponential, polynomial, and power model, we found the best fitted trend in
the power model. Hence, the power model trend was analyzed. The mathematical modeling of the
power model is given as:

Trend Line Model
A linear trend model is computed for natural log of sum of intensity given natural log of sum of
duration. The model may be significant at P .05. The factor period may be significant at P .05
(Tables 5.2–5.4).
Analysis of the trend found with the respective techniques are as follows:
GSRa: The improvement trend of duration of TTH pain with the pain intensity was exponential
almost throughout the period, having exception at the end after using the GSRa as the feedback