Comparison 2. Conventional TENS +/‐ Acupuncture‐like TENS vs Placebo, end of treatment (4 weeks).

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Pain Intensity, VAS (0‐100)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
2 Pain Improvement, VAS (0‐100)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
3 Pain Improvement, (1‐6, 1=pain entirely gone, 6=much worse)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
4 Frequency of Pain, (1‐5, 1=never, 5=all the time)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
5 Generic Health Status (Modified Version of Sickness Impact Profile)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
6 Self‐Rated Activity Level (1‐3, 1=more active than baseline, 3=less active)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
7 Flexion ROM (finger‐to‐floor distance (cm))	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
8 Flexion ROM (Schober test (cm))	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
9 Lasegue's SLR (degrees)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
10 Use of Medical Services, (visits to other providers)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected