Variables

4291 variables.
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Module Label Name Description Type
Heart failure (CHRIS baseline) x0hf01b Dyspnea/shortness of breath (since) Since when? (age) Integer
Heart failure (CHRIS baseline) x0hf02 Pulmonary edema Do you have 'water in the lung' (pulmonary edema)? Categorical
Heart failure (CHRIS baseline) x0hf02b Pulmonary edema (since) Since when? (age) Integer
Heart failure (CHRIS baseline) x0hf03 Swollen legs/water in the legs Do you often have swollen legs, because of 'water in the legs'? Categorical
Heart failure (CHRIS baseline) x0hf03b Swollen legs/water in the legs (since) Since when? (age) Integer
Heart failure (CHRIS baseline) x0hf04 Myocarditis Do you have myocarditis? Categorical
Heart failure (CHRIS baseline) x0hf04b Myocarditis (since) Since when? (age) Integer
Heart failure (CHRIS baseline) x0hf04c2 Myocarditis elaborated (description/free text) Describe the disease as accurately as possible (elaborated) Character
Heart failure (CHRIS baseline) x0hf05 Myocardial disease Do you have a myocardial disease? (e.g. hypertrophic cardiomyopathy) Categorical
Heart failure (CHRIS baseline) x0hf05b Myocardial disease (since) Since when? (age) Integer
Heart failure (CHRIS baseline) x0hf05c2 Myocardial disease elaborated (description/free text) Describe the disease as accurately as possible (elaborated) Character
Heart failure (CHRIS baseline) x0hf06 Heart defect Have you ever been told that you have a heart defect (as a child)? Categorical
Heart failure (CHRIS baseline) x0hf06a2 Heart defect elaborated (description/free text) Describe the problem as accurately as possible (elaborated) Character
Heart failure (CHRIS baseline) x0hf07 ECG Has a doctor ever performed an ECG on you (except surgical preparation or sport competitions)? Categorical
Heart failure (CHRIS baseline) x0hf07b ECG (age) Do you remember in which year the ECG showed conspicuous findings for the first time? (age) Integer
Heart failure (CHRIS baseline) x0hf07c ECG: Conspicuous findings Where there conspicuous findings? Categorical
Heart failure (CHRIS baseline) x0hf07d2 ECG: Conspicuous findings elaborated (free text) Which? (elaborated) Character
Heart failure (CHRIS baseline) x0hf08 Heart failure (diagnosed) Has a doctor ever told you that you have a heart failure? Categorical
Heart failure (CHRIS baseline) x0hf08b Heart failure (age at diagnosis) In which year was it diagnosed for the first time? (age) Integer
Heart failure (CHRIS baseline) x0hf08c Heart failure (last 12 months) Have you had a heart failure within the last 12 months? Categorical
Heart failure (CHRIS baseline) x0hf08d Heart failure (treated last 12 months) Were you treated for this within the last 12 months? Categorical
Heart failure (CHRIS baseline) x0hfn1b Heart failure notes elaborated (symptoms) Heart failure notes elaborated (symptoms) Character
Heart failure (CHRIS baseline) x0hfn2b Heart failure notes elaborated (diseases) Heart failure notes elaborated (diseases) Character
Heart failure (CHRIS baseline) x0hfn3b Heart failure notes elaborated (ecg) Heart failure notes elaborated (ECG) Character
Heart failure (CHRIS baseline) x0hfn4b Heart failure notes elaborated (heart failure) Heart failure notes elaborated (heart failure) Character
Heart failure (CHRIS baseline) x0hfnoteb Heart failure notes elaborated Heart failure notes elaborated Character
Heart failure (CHRIS baseline) x0hfver Heart failure version Heart failure version Categorical
Heart rate variability (CHRIS baseline) x0ec202 total length of the ECG Total length of the ECG recording, expressed in seconds Float
Heart rate variability (CHRIS baseline) x0ec203 effective length Effective length of the ECG which is used for HRV analysis, expressed in seconds Float
Heart rate variability (CHRIS baseline) x0ec204 effective length (%) Effective data length, expressed as percentage of the total length Float
Heart rate variability (CHRIS baseline) x0ec205a segment start Start point of the data segment which is used for HRV analysis, expressed in seconds Integer
Heart rate variability (CHRIS baseline) x0ec205b segment end End point of the data segment which is used for HRV analysis, expressed in seconds Integer
Heart rate variability (CHRIS baseline) x0ec206 length RR series Length of the RR series Integer
Heart rate variability (CHRIS baseline) x0ec207a t_RR start Time point of the first beat in the RR series, expressed in seconds Float
Heart rate variability (CHRIS baseline) x0ec207b t_RR end Time point of the last beat in the RR series, expressed in seconds Float
Heart rate variability (CHRIS baseline) x0ec208 total number of beats Total number of beats Integer
Heart rate variability (CHRIS baseline) x0ec209 number of corrected beats Number of corrected beats Integer
Heart rate variability (CHRIS baseline) x0ec210 number of corrected beats (%) Number of corrected beats, expressed as percentage of the total number of beats Float
Heart rate variability (CHRIS baseline) x0ec211 number of noise segments Number of noise segments Integer
Heart rate variability (CHRIS baseline) x0ec212 noise segments List of all detected noise segments, expressed as tuple (start point of the noisy region, end point of the noisy region), expressed in seconds Character
Heart rate variability (CHRIS baseline) x0ec213 PNS index PNS index Float
Heart rate variability (CHRIS baseline) x0ec213a PNS param: nMeanRR First parameter used for PNS index calculation: MeanRR normalized by scaling with the standard deviations of normal population Float
Heart rate variability (CHRIS baseline) x0ec213b PNS param: nRMSSD Second parameter used for PNS index calculation: RMSSD normalized by scaling with the standard deviations of normal population Float
Heart rate variability (CHRIS baseline) x0ec213c PNS param: nSD1 Third parameter used for PNS index calculation: SD1 normalized by scaling with the standard deviations of normal population Float
Heart rate variability (CHRIS baseline) x0ec214 SNS index SNS index Float
Heart rate variability (CHRIS baseline) x0ec214a SNS param: nMeanHR First parameter used for SNS index calculation: MeanHR normalized by scaling with the standard deviations of normal population Float
Heart rate variability (CHRIS baseline) x0ec214b SNS param: nSI Second parameter used for SNS index calculation: SI normalized by scaling with the standard deviations of normal population 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
Heart rate variability (CHRIS baseline) x0ec215 mean RR Mean value of RR intervals, expressed in milliseconds Float
Heart rate variability (CHRIS baseline) x0ec216 SDNN SDNN: Standard deviation of RR intervals, expressed in milliseconds 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) x0ec218 NN50 NN50: Number of successive RR interval pairs that differ more than 50 ms Integer
Heart rate variability (CHRIS baseline) x0ec219 pNN50 pNN50: NN50 divided by the total number of RR intervals 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) x0ec221 SDNNI SDNNI: Mean of the standard deviations of RR intervals in 5-min segments, 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
Heart rate variability (CHRIS baseline) x0ec224 min HR Minimum HR computed using N=5 beat moving average Float
Heart rate variability (CHRIS baseline) x0ec225 max HR Maximum HR computed using N=5 beat moving average Float
Heart rate variability (CHRIS baseline) x0ec226 SI (Stress Index) SI: Baevsky stress index, computed according to the formula given in Baevsky 2009, is a geometric measure of HRV reflecting cardiovascular system stress 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
Heart rate variability (CHRIS baseline) x0ec228 TINN TINN: baseline width of the RR histogram evaluated through triangular interpolation Integer
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) x0ec230 DC DC: Deceleration Capacity is a measure of cardiac parasympathetic modulation as it captures the lengthening of RR interval within 2-4 successive beats. It is computed as a four point difference from the deceleration PRSA signal (phase-rectified signal averaging), expressed in milliseconds 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) 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) x0ec233 VLF peak (Welch) Very Low Frequency (VLF) band peak frequency, with PSD estimated using Fast Fourier transformation (FFT) based Welch's periodogram method, expressed in Hz Float
Heart rate variability (CHRIS baseline) x0ec234 LF peak (Welch) Low Frequency (LF) band peak frequency, with PSD estimated using Fast Fourier transformation (FFT) based Welch's periodogram method, expressed in Hz Float
Heart rate variability (CHRIS baseline) x0ec235 HF peak (Welch) High Frequency (HF) band peak frequency, with PSD estimated using Fast Fourier transformation (FFT) based Welch's periodogram method, expressed in Hz Float
Heart rate variability (CHRIS baseline) x0ec236 VLF power (Welch) Absolute power of VLF band, with PSD estimated using Fast Fourier transformation (FFT) based Welch's periodogram method, expressed in ms^2 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) 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) 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
Heart rate variability (CHRIS baseline) x0ec240 logVLF power (Welch) Natural logarithm transformed values of VLF band, with PSD estimated using Fast Fourier transformation (FFT) based Welch's periodogram method 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
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
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) 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
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
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) x0ec247 LF power (n.u.) (Welch) Power of LF band in normalised units, LF [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) 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) 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
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
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) 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) 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) x0ec254 LF power (AR) Absolute power of LF band, with PSD estimated using parametric autoregressive (AR) modeling method, expressed in ms^2 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
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) x0ec257 logVLF power (AR) Natural logarithm transformed values of VLF band, with PSD estimated using parametric autoregressive (AR) modeling method 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
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
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) x0ec261 VLF power (%) (AR) Relative power of VLF band, 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) x0ec263 HF power (%) (AR) Relative power of HF band, with PSD estimated using parametric autoregressive (AR) modeling method, expressed in ms^2 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
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
4291 variables.