Table 2. Changes in Numerical Rating Scale Pain Score, Insomnia Severity Index, and Frequency of Nocturnal Calf Cramps During Treatment With Myofascial Trigger Point Injection(s)

	T0	T1	T2	T3
NRS	6.9 ± 1.7	4.8 ± 2.0^*	2.4 ± 2.6^*	2.2 ± 2.2^*
FC	3.5 (1–20)	1.0 (0–7)^{^†}	0.0 (0–7)^{^†}	0.5 (0–2)^{^†}
ISI	17.8 ± 5.0	12.8 ± 4.6^*	10.8 ± 4.4^*	8.9 ± 3.7^*

Data are presented as mean ± standard deviation or median (range).
↵* P < .01 vs baseline (T0) using repeated measures analysis of variance.
↵† P < .01 vs T0 using Wilcoxon signed rank test.
FC, frequency of nocturnal calf cramps; ISI, Insomnia Severity Index; NRS, numerical rating scale pain score; T1, 1 week after the first injection; T2, 2 weeks after the first injection; T3, 4 weeks after the first injection.