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. 2016 Dec 12;9:1215–1220. doi: 10.2147/JPR.S120343

Figure 1.

Figure 1

Log LF/HF in patients with decreased pain intensity >2 points on the NRS before (time intervals T − 2 and T − 1) and after (time intervals T + 1, T + 2, T + 3, and T + 4) the start of therapy.

Notes: 1 = T − 2, 2 = T − l, 3 = T + l, 4 = T + 2, 5 = T + 3, and 6 = T + 4. T − 2: 30 minutes before the start of opioid medication; T − 1: 15 minutes before the start of opioid medication; T + 1: 10–25 minutes after the start of opioid medication; T + 2: 10–45 minutes after the start of opioid medication; T + 3: 10–75 minutes after the start of opioid medication; T + 4: 10–135 minutes after the start of opioid medication.

Abbreviations: LF, low frequency; HF, high frequency; NRS, numeric rating scale.