Table 4 |
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|
Predictive value of heart rate variability indexes in 22 patients with fibromyalgia and 22 controls. |
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|
Sensitivity (%) |
Specificity (%) |
PPV (%) |
NPV (%) |
|
|
|
||||
|
24-hour |
||||
|
|
||||
|
Mean NN ≤ 779 ms |
73 |
55 |
62 |
67 |
|
SDNN ≤ 141 ms |
68 |
68 |
68 |
68 |
|
SDANN ≤ 119 ms |
64 |
68 |
67 |
65 |
|
SDSD ≤ 40 ms |
64 |
68 |
67 |
65 |
|
RMSSD ≤ 40 ms |
64 |
68 |
67 |
65 |
|
pNN50 ≤ 13% |
55 |
73 |
67 |
62 |
|
|
||||
|
Sleeping hours |
||||
|
|
||||
|
Mean NN ≤ 922 ms |
73 |
59 |
64 |
68 |
|
SDNN ≤ 114 ms |
86 |
68 |
73 |
83 |
|
SDANN ≤ 59 ms |
68 |
82 |
79 |
72 |
|
SDSD ≤ 44 ms |
55 |
73 |
67 |
62 |
|
RMSSD ≤ 44 ms |
55 |
73 |
67 |
62 |
|
pNN50 ≤ 31% |
68 |
55 |
60 |
63 |
|
|
||||
|
Mean NN, mean NN interval; pNN50, percentage of adjacent pairs of R-R intervals that differ by more than 50 ms from each other in a given time period; ms, milliseconds; RMSSD, square root of the mean of the squares of differences between adjacent NN intervals; SDANN, mean standard deviation of the average NN intervals calculated over 5 minutes; SDNN, standard deviation of the NN intervals; SDSD, standard deviation of the successive NN differences. |
||||
|
Lerma et al. Arthritis Research & Therapy 2011 13:R185 doi:10.1186/ar3513 |
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