Variables

4291 variables.
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Module Label Name Description Type
Heart rate variability (CHRIS baseline) x0ec282 RPA Shannon Entropy RPA Shannon Entropy: it is the entropy of the probability distribution of the diagonal line lengths Float
Flavonoid intake (CHRIS baseline) x0fl004 Total daily flavan-3-ols Total daily flavan-3-ols Float
Heart rate variability (CHRIS baseline) x0ec283a MSE (t=1) MSE (t=1): Multi Scale Entropy, extension of SampEn to multiple time scales, here calculated for time scale factor equal to 1 Float
Heart rate variability (CHRIS baseline) x0ec283b MSE (t=2) MSE (t=2): Multi Scale Entropy, extension of SampEn to multiple time scales, here calculated for time scale factor equal to 2 Float
Flavonoid intake (CHRIS baseline) x0fl005 Total daily flavonols Total daily flavonols Float
Targeted serum metabolomics (CHRIS baseline) x0pt011 Glu Glutamate Float
Heart rate variability (CHRIS baseline) x0ec279 RPA divergence RPA divergence: Recurrence Plot Analysis is another approach for analyzing the complexity of the RR series, which consists in creating a symmetrical matrix of zeros and ones. The divergence (DIV) is defined as the inverse of Lmax Float
Heart rate variability (CHRIS baseline) x0ec277 RPA recurrence rate RPA recurrence rate: Recurrence Plot Analysis is another approach for analyzing the complexity of the RR series, which consists in creating a symmetrical matrix of zeros and ones. The recurrence rate (REC) is defined as the ratio of ones and zeros in this RP matrix Float
Blood measurements (CHRIS baseline) x0lp26a Magnesium (Mg) Magnesium (Mg) Float
Smoking (CHRIS baseline) x0sm06d Interruption duration cigarette smoking, v.1 Interruption duration cigarette smoking, v.1 Float
ECG 10s (CHRIS baseline) x0ec106l P-Amplitude negative, V6 Peak amplitude of the negative deflection of P wave, expressed in milliVolts, measured in lead V6 Float
Blood measurements (CHRIS baseline) x0lp26 Magnesium (Mg) Magnesium (Mg) Float
ECG 10s (CHRIS baseline) x0ec106k P-Amplitude negative, V5 Peak amplitude of the negative deflection of P wave, expressed in milliVolts, measured in lead V5 Float
Heart rate variability (CHRIS baseline) x0ec283c MSE (t=3) MSE (t=3): Multi Scale Entropy, extension of SampEn to multiple time scales, here calculated for time scale factor equal to 3 Float
Chronic pain (CHRIS baseline) x0pn22 Other pain since (years) Since when is this pain present? (years) Float
Anthropometry (CHRIS baseline) x0an01 Height Height Float
Blood measurements (CHRIS baseline) x0lp50j Basophils (absolute basophil count) Basophils (absolute basophil count) Float
Heart rate variability (CHRIS baseline) x0ec276 DFA alpha2 DFA alpha2: Detrended Fluctuation Analysis measures the correlation within the signal. Slope alpha2 characterizes long-term fluctuations or the RR series Float
Blood measurements (CHRIS baseline) x0lp06a Glycated hemoglobin (HbA1c) Glycated hemoglobin (HbA1c) Float
Anthropometry (CHRIS baseline) x0an03a Body Mass Index Body Mass Index Float
ECG 10s (CHRIS baseline) x0ec131b J-Value, II J point voltage value, expressed in milliVolts, measured in lead II Float
Targeted serum metabolomics (CHRIS baseline) x0pt019 Met Methionine Float
ECG 10s (CHRIS baseline) x0ec106i P-Amplitude negative, V3 Peak amplitude of the negative deflection of P wave, expressed in milliVolts, measured in lead V3 Float
Flavonoid intake (CHRIS baseline) x0fl006 Total daily flavones Total daily flavones Float
Heart rate variability (CHRIS baseline) x0ec278 RPA determinism RPA determinism: Recurrence Plot Analysis is another approach for analyzing the complexity of the RR series, which consists in creating a symmetrical matrix of zeros and ones. The determinism (DET) is defined as the percentage of recurrence points which form diagonal lines Float
Heart rate variability (CHRIS baseline) x0ec268 Poincare SD1 Poincare SD1: in Poincare plot, SD1 represents the standard deviation perpendicular to the line-of-identity Float
ECG 10s (CHRIS baseline) x0ec106h P-Amplitude negative, V2 Peak amplitude of the negative deflection of P wave, expressed in milliVolts, measured in lead V2 Float
Heart rate variability (CHRIS baseline) x0ec269 Poincare SD2 Poincare SD2: in Poincare plot, SD2 represents the standard deviation along the line-of-identity Float
Heart rate variability (CHRIS baseline) x0ec267 EDR (ECG Derived Respiration) EDR (ECG Derived Respiration), expressed in Hz Float
ECG 10s (CHRIS baseline) x0ec106g P-Amplitude negative, V1 Peak amplitude of the negative deflection of P wave, expressed in milliVolts, measured in lead V1 Float
Heart rate variability (CHRIS baseline) x0ec270 Poincare SD2/SD1 Poincare SD2/SD1: ratio between SD2 and SD1 Float
Chronic pain (CHRIS baseline) x0pn02 Back pain since (years) Since when is the back pain present? (years) Float
Heart rate variability (CHRIS baseline) x0ec264 LF power (n.u.) (AR) Power of LF band in normalised units, LF [n.u.] = LF [ms2] / (total power [ms2] - VLF [ms2]) x 100%, with PSD estimated using parametric autoregressive (AR) modeling method, expressed in n.u Float
ECG 10s (CHRIS baseline) x0ec106f P-Amplitude negative, aVF Peak amplitude of the negative deflection of P wave, expressed in milliVolts, measured in lead aVF Float
Heart rate variability (CHRIS baseline) x0ec265 HF power (n.u.) (AR) Power of HF band in normalised units, HF [n.u.] = LF [ms2] / (total power [ms2] - VLF [ms2]) x 100%, with PSD estimated using parametric autoregressive (AR) modeling method, expressed in n.u. Float
Heart rate variability (CHRIS baseline) x0ec266 LF/HF power (AR) Ratio between LF and HF band powers, with PSD estimated using parametric autoregressive (AR) modeling method Float
ECG 10s (CHRIS baseline) x0ec106e P-Amplitude negative, aVL Peak amplitude of the negative deflection of P wave, expressed in milliVolts, measured in lead aVL Float
Heart rate variability (CHRIS baseline) x0ec272 Approximate Entropy Approximate Entropy: measures the complexity or irregularity of the signal. Large values of ApEn indicate high irregularity and smaller values of ApEn more regular signal Float
Heart rate variability (CHRIS baseline) x0ec283t MSE (t=20) MSE (t=20): Multi Scale Entropy, extension of SampEn to multiple time scales, here calculated for time scale factor equal to 20 Float
Heart rate variability (CHRIS baseline) x0ec258 logLF power (AR) Natural logarithm transformed values of LF band, with PSD estimated using parametric autoregressive (AR) modeling method Float
ECG 10s (CHRIS baseline) x0ec106d P-Amplitude negative, aVR Peak amplitude of the negative deflection of P wave, expressed in milliVolts, measured in lead aVR Float
Heart rate variability (CHRIS baseline) x0ec259 logHF power (AR) Natural logarithm transformed values of HF band, with PSD estimated using parametric autoregressive (AR) modeling method Float
Blood measurements (CHRIS baseline) x0lp50i Eosinophils (absolute eosinophil count) Eosinophils (absolute eosinophil count) Float
ECG 10s (CHRIS baseline) x0ec106c P-Amplitude negative, III Peak amplitude of the negative deflection of P wave, expressed in milliVolts, measured in lead III Float
Heart rate variability (CHRIS baseline) x0ec237 LF power (Welch) Absolute power of LF band, with PSD estimated using Fast Fourier transformation (FFT) based Welch's periodogram method, expressed in ms^2 Float
Heart rate variability (CHRIS baseline) x0ec260 logtot power (AR) Natural logarithm transformed values of total spectrum power, with PSD estimated using parametric autoregressive (AR) modeling method Float
Heart rate variability (CHRIS baseline) x0ec254 LF power (AR) Absolute power of LF band, with PSD estimated using parametric autoregressive (AR) modeling method, expressed in ms^2 Float
ECG 10s (CHRIS baseline) x0ec106b P-Amplitude negative, II Peak amplitude of the negative deflection of P wave, expressed in milliVolts, measured in lead II Float
Heart rate variability (CHRIS baseline) x0ec255 HF power (AR) Absolute power of HF band, with PSD estimated using parametric autoregressive (AR) modeling method, expressed in ms^2 Float
ECG 10s (CHRIS baseline) x0ec106a P-Amplitude negative, I Peak amplitude of the negative deflection of P wave, expressed in milliVolts, measured in lead I Float
Heart rate variability (CHRIS baseline) x0ec256 total power (AR) Absolute power of the total spectrum, with PSD estimated using parametric autoregressive (AR) modeling method, expressed in ms^2 Float
Heart rate variability (CHRIS baseline) x0ec262 LF power (%) (AR) Relative power of LF band, with PSD estimated using parametric autoregressive (AR) modeling method, expressed in ms^2 Float
Heart rate variability (CHRIS baseline) x0ec273 Sample Entropy Sample Entropy: similar to ApEn, but it presents some differences in the calculation Float
Heart rate variability (CHRIS baseline) x0ec249 LF-HF power (Welch) Ratio between LF and HF band powers, with PSD estimated using Fast Fourier transformation (FFT) based Welch's periodogram method Float
ECG 10s (CHRIS baseline) x0ec105l P-Amplitude positive, V6 Peak amplitude of the positive deflection of P wave, expressed in milliVolts, measured in lead V6 Float
Heart rate variability (CHRIS baseline) x0ec250 VLF peak (AR) Very Low Frequency (VLF) band peak frequency, with PSD estimated using parametric autoregressive (AR) modeling method, expressed in Hz Float
Blood measurements (CHRIS baseline) x0lp25a Phosphorus (P) Phosphorus (P) Float
ECG 10s (CHRIS baseline) x0ec105k P-Amplitude positive, V5 Peak amplitude of the positive deflection of P wave, expressed in milliVolts, measured in lead V5 Float
Heart rate variability (CHRIS baseline) x0ec248 HF power (n.u.) (Welch) Power of HF band in normalised units, HF [n.u.] = LF [ms2] / (total power [ms2] - VLF [ms2]) x 100%, with PSD estimated using Fast Fourier transformation (FFT) based Welch's periodogram method, expressed in n.u. Float
Heart rate variability (CHRIS baseline) x0ec251 LF peak (AR) Low Frequency (LF) band peak frequency, with PSD estimated using parametric autoregressive (AR) modeling method, expressed in Hz Float
Heart rate variability (CHRIS baseline) x0ec244 VLF power (%) (Welch) Relative power of VLF band, with PSD estimated using Fast Fourier transformation (FFT) based Welch's periodogram method, expressed in ms^2 Float
ECG 10s (CHRIS baseline) x0ec105j P-Amplitude positive, V4 Peak amplitude of the positive deflection of P wave, expressed in milliVolts, measured in lead V4 Float
Heart rate variability (CHRIS baseline) x0ec245 LF power (%) (Welch) Relative power of LF band, with PSD estimated using Fast Fourier transformation (FFT) based Welch's periodogram method, expressed in ms^2 Float
Blood measurements (CHRIS baseline) x0lp50h Monocytes (absolute monocyte count) Monocytes (absolute monocyte count) Float
ECG 10s (CHRIS baseline) x0ec105i P-Amplitude positive, V3 Peak amplitude of the positive deflection of P wave, expressed in milliVolts, measured in lead V3 Float
Heart rate variability (CHRIS baseline) x0ec246 HF power (%) (Welch) Relative power of HF band, with PSD estimated using Fast Fourier transformation (FFT) based Welch's periodogram method, expressed in ms^2 Float
Heart rate variability (CHRIS baseline) x0ec252 HF peak (AR) High Frequency (HF) band peak frequency, with PSD estimated using parametric autoregressive (AR) modeling method, expressed in Hz Float
Heart rate variability (CHRIS baseline) x0ec275 DFA alpha1 DFA alpha1: Detrended Fluctuation Analysis measures the correlation within the signal. Slope alpha1 characterizes short-term fluctuations or the RR series Float
Heart rate variability (CHRIS baseline) x0ec239 total power (Welch) Absolute power of the total spectrum, with PSD estimated using Fast Fourier transformation (FFT) based Welch's periodogram method, expressed in ms^2 Float
ECG 10s (CHRIS baseline) x0ec105g P-Amplitude positive, V1 Peak amplitude of the positive deflection of P wave, expressed in milliVolts, measured in lead V1 Float
Heart rate variability (CHRIS baseline) x0ec241 logLF power (Welch) Natural logarithm transformed values of LF band, with PSD estimated using Fast Fourier transformation (FFT) based Welch's periodogram method Float
Blood measurements (CHRIS baseline) x0lp25 Phosphorus (P) Phosphorus (P) Float
ECG 10s (CHRIS baseline) x0ec105f P-Amplitude positive, aVF Peak amplitude of the positive deflection of P wave, expressed in milliVolts, measured in lead aVF Float
Heart rate variability (CHRIS baseline) x0ec238 HF power (Welch) Absolute power of HF band, with PSD estimated using Fast Fourier transformation (FFT) based Welch's periodogram method, expressed in ms^2 Float
Heart rate variability (CHRIS baseline) x0ec242 logHF power (Welch) Natural logarithm transformed values of HF band, with PSD estimated using Fast Fourier transformation (FFT) based Welch's periodogram method Float
Flavonoid intake (CHRIS baseline) x0fl007 Total daily Polymers Total daily Polymers Float
ECG 10s (CHRIS baseline) x0ec105e P-Amplitude positive, aVL Peak amplitude of the positive deflection of P wave, expressed in milliVolts, measured in lead aVL Float
Flavonoid intake (CHRIS baseline) x0fl040 Total daily Pro monomers Total daily Pro monomers Float
Blood measurements (CHRIS baseline) x0lp50g Lymphocytes (absolute lymphocyte count) Lymphocytes (absolute lymphocyte count) Float
ECG 10s (CHRIS baseline) x0ec105d P-Amplitude positive, aVR Peak amplitude of the positive deflection of P wave, expressed in milliVolts, measured in lead aVR Float
Blood measurements (CHRIS baseline) x0lp02d Activated partial thromboplastin time (aPTT) Activated partial thromboplastin time (aPTT) Float
Heart rate variability (CHRIS baseline) x0ec243 logtot power (Welch) Natural logarithm transformed values of total spectrum power, with PSD estimated using Fast Fourier transformation (FFT) based Welch's periodogram method Float
Heart rate variability (CHRIS baseline) x0ec253 VLF power (AR) Absolute power of VLF band, with PSD estimated using parametric autoregressive (AR) modeling method, expressed in ms^2 Float
Heart rate variability (CHRIS baseline) x0ec283d MSE (t=4) MSE (t=4): Multi Scale Entropy, extension of SampEn to multiple time scales, here calculated for time scale factor equal to 4 Float
Chronic pain (CHRIS baseline) x0pn12 Joint pain since (years) Since when is the joint pain present? (years) Float
Heart rate variability (CHRIS baseline) x0ec227 HRV triangular index HRV triangular index: integral of the histogram (i.e. total number of RR intervals) divided by the height of the histogram computed with a bin width of 1/128 seconds Float
ECG 10s (CHRIS baseline) x0ec105c P-Amplitude positive, III Peak amplitude of the positive deflection of P wave, expressed in milliVolts, measured in lead III Float
Heart rate variability (CHRIS baseline) x0ec225 max HR Maximum HR computed using N=5 beat moving average Float
ECG 10s (CHRIS baseline) x0ec105b P-Amplitude positive, II Peak amplitude of the positive deflection of P wave, expressed in milliVolts, measured in lead II Float
Heart rate variability (CHRIS baseline) x0ec229 AC AC: Acceleration Capacity captures the shortening of RR interval within 2-4 successive beats. It is computed as a four point difference from the acceleration PRSA signal (phase-rectified signal averaging), expressed in milliseconds Float
Heart rate variability (CHRIS baseline) x0ec222 mean HR Mean heart rate, expressed in beats per minute Float
Heart rate variability (CHRIS baseline) x0ec223 std HR Standard deviation of heart rate Float
Blood measurements (CHRIS baseline) x0lp50f Neutrophils (absolute neutrophil count) Neutrophils (absolute neutrophil count) Float
Heart rate variability (CHRIS baseline) x0ec224 min HR Minimum HR computed using N=5 beat moving average Float
Heart rate variability (CHRIS baseline) x0ec231 ACmod ACmod: modified Acceleration Capacity, computed according to the formula given in Nasario-Junior et al. 2014, expressed in milliseconds Float
Heart rate variability (CHRIS baseline) x0ec219 pNN50 pNN50: NN50 divided by the total number of RR intervals Float
Heart rate variability (CHRIS baseline) x0ec217 RMSSD RMSSD: Square root of the mean squared differences between successive RR intervals, expressed in milliseconds Float
Heart rate variability (CHRIS baseline) x0ec220 SDANN SDANN: Standard deviation of the averages of RR intervals in 5-min segments, expressed in milliseconds Float
Heart rate variability (CHRIS baseline) x0ec232 DCmod DCmod: modified Deceleration Capacity, computed according to the formula given in Nasario-Junior et al. 2014, expressed in milliseconds Float
Heart rate variability (CHRIS baseline) x0ec214c SNS param: nSD2 Third parameter used for SNS index calculation: SD2 normalized by scaling with the standard deviations of normal population Float
4291 variables.