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| Studies | Taped objects | Selected ear points (number) Main ear points (M) and adjunct ear points (A) | Acupoint detection | Manual pressing | Using ears alternately | Duration/follow-up |
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| Lu et al. 2015 | SV | M(7): liver, kidney, waist, lumbar, sacrum, cortex, and ShenmenA(5): adrenal gland, popliteal space, liver, lung, and spleen | Probe | 20 min/day for a total of 20 cycles/time per acupoint until de qi | √ | 12 weeks (3-4 days/session)/NM |
| Suen et al. 2007 | E: magnetic pellet C: SV | M(7): Shenmen, kidney, urinary bladder, lumbosacral vertebrae, buttock, liver, and spleen | Electronic | No manual pressure exerted | √ | 3 weeks (3 days/session)/at two and four weeks |
| Wang 2015 | SV | M(7): liver, kidney, waist, lumbar, sacrum, cortex, and ShenmenA(5): adrenal gland, popliteal space, liver, lung, and spleen | Probe | 20 min/day for a total of 20 cycles/time per acupoint until de qi | √ | 12 weeks (3-4 days/session)/NM |
| Xia et al. 2011 | SV | M(6): Ashi point, lumbosacral vertebrae, kidney, liver, Shenmen, and subcortex | NM | 3 times/day for a total of 3–5 min/time until de qi | √ | 2 weeks (3-4 days/session)/NM |
| Yeh et al. 2013 | SV | M(4): Shenmen, sympathetic, nervous subcortex, lower back | Electronic | ≥3 times/day for 3 min/time and 3 minutes whenever experiencing pain | No | 4 weeks (5 days/session)/1 month |
| Yeh et al. 2014 | SV | M(7): Shenmen, sympathetic, nervous subcortex, popliteal fossa, groove of spinal posterior, sciatic nerve, lumbosacral | Electronic | ≥3 times/day for 3 min/time and 3 minutes whenever experiencing pain | No | 4 weeks (5 days/session)/1 month |
| Yeh et al. 2015 | SV | M(4): Shenmen, sympathetic, nervous subcortex, two zones for lower back which located on the front and back of the ear | Electronic | ≥3 times/day for 3 min/time and 3 minutes whenever experiencing pain | No | 4 weeks (5 days/session)/NM |
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