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upps_lackpersevere under General Health/Short UPPS-P Impulsive Behavior Scale in ANSWERS variables
Summary item from the Short UPPS-P Impulsive Behavior Scale, calculated from :upps_1:, :upps_4:, :upps_7: and :upps_11:. Range 4 -16 with higher scores indicating less impulsivity. Note: reverse coding for items 1, 4 and 7, where we change 1=4, 2=3, 3=2 and 4=1 before calculating the overall sum. Cyders et al 2014 (PMID: 24636739)Search for all Short UPPS-P Impulsive Behavior Scale variables within this dataset
st4_1_3 under Clinical Data/Diagnostic Studies/Electrocardiogram in SHHS variables
Minnesota (MN) code 4-1 to 4-3. Data derived from standard resting 12-lead electrocardiogram (ECG) with the participant supine. Records were interpreted and Minnesota (MN) codes were provided by clinical cardiologists.
rdi4p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in SHHS variables
Ratio of the count of all apneas (central and obstructive) and hypopneas associated with at least a >=4% oxygen desaturation to the total sleep time