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Fig 1.

Mean centered, normalized and band pass-filtered RR series in 2 different levels of pain: without any painful stimulus (upper panel), under painful stimulus (lower panel).

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Fig 2.

Time-points for ANI measurement.

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Fig 2 Expand

Fig 3.

Study flowchart.

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Fig 3 Expand

Table 1.

Patient characteristics at ICU admission.

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Table 1 Expand

Table 2.

Patient characteristics at inclusion.

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Table 2 Expand

Fig 4.

ANI values in study patients.

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Fig 4 Expand

Table 3.

ANI values in study subgroups.

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Table 3 Expand