CODEBOOK Summary of Blood Pressure and Hypertension Markers, August 2021 7-28-2022 Start ____Field____ Section/ Column Len Format Variable Question Description Code ------ --- --------- -------------------------------- ------------ ------------------------------ ------------------------------ 1 6 6.0 KID Participant ID 100000= 100000 . . 699999= 699999 7 3 3.0 VISIT CKiD Visit number 10 . . 160 . . 500= Post-RRT protocol 10 9 9.3 DB_Date Datebase date of Visit 2000.000= January 1,2000 (casual BP measurements) . . 2025.999= December 31,2025 -9= Missing 19 9 9.3 PIP_BPdate Date of PIP BP measurement 2000.000= January 1,2000 . . 2025.999= December 31,2025 -9 or Blank= Missing 28 4 4.0 SBP Average Systolic BP from PE 50mm Hg . . 200mm Hg 32 4 4.0 DBP Average Diastolic BP from PE 30mm Hg . . 99mm Hg 36 6 6.3 SBPINDXagh SBP Index based on age, 0.000 gender & height . . 9.999 -1= NA -9 or Blank= Missing 42 7 7.2 SBPPCTagh Systolic BP percentile based 1% on age, gender & height . . 99% -1= NA -9 or Blank= Missing 49 6 6.2 SBPZagh Systolic BP z-score based on -9.99 age, gender & height . . 9.99 -1= NA -9 or Blank= Missing 55 6 6.3 DBPINDXagh DBP Index based on age, 0.000 gender & height . . 9.999 -1= NA -9 or Blank= Missing 61 7 7.2 DBPPCTagh Diastolic BP percentile based 1% on age, gender & height . . 99% -1= NA -9 or Blank= Missing 68 6 6.2 DBPZagh Diastolic BP z-score based on -9.99 age, gender & height . . 9.99 -1= NA -9 or Blank= Missing 74 2 2.0 BPstage Blood pressure stage based on 0= Normal BP 2017 AAP Guidelines 1= Elevated BP 2= Stage 1 HTN 3= Stage 2 HTN -1= NA -9 or Blank= Missing 76 2 2.0 BPstage_caution Indicator of BPstage caution 0= No Caution 1= Missing SBP or DBP 2= Age < 1 year 3= Age between 1-13 years and height z-score < -3.09 or > 3.09 4= Missing height z-score (among age 1-13 years) 5= Age >= 13 years and height z- score < -3.09 or > 3.09 6= Missing height z-score (among age >= 13 years) 7= Missing age -1= NA -9 or Blank= Missing 78 2 2.0 PIP_BPdatecaution Indicator of PIP BP date 0= DB date and PIP BP date within 0 caution and <0.5 years 1= DB_date and PIP BP date within 0.5 and <1.0 years 2= DB date and PIP BP date >=1.0 year apart 3= PIP has BP data but no PIP BP date -1= NA (non-PIP visit) -9 or Blank= Missing 80 9 9.3 ABPM_Date Date of ABPM protocol 2000.000= January 1,2000 . . 2025.999= December 31,2025 -9= Missing 89 7 7.2 WkSysMean Systolic Mean during Wake 0.00= 0.00 State . . 300.00= 300.00 96 7 7.2 SlSysMean Systolic Mean during Sleep 0.00= 0.00 State . . 300.00= 300.00 103 6 6.2 WkSysStDev Systolic SD during Wake State 0.00= 0.0 . . 1= 1 109 6 6.2 SlSysStDev Systolic SD during Sleep State 0.00= 0.0 . . 1= 1 115 5 5.2 WkSysIndx Wake Systolic Index based on 0= 0.00 95%ile Soergel 1997 Limits . . 1.99= 1.99 120 5 5.2 SlSysIndx Sleep Systolic Index based on 0= 0.00 95%ile Soergel 1997 Limits . . 1.99= 1.99 125 6 6.1 SysPctDipping ((Wake Mean Systolic BP - -15= -15.0 Sleep Mean Systolic BP)/Wake . Mean Systolic BP)*100 . 100.0= 100.0 131 7 7.2 WkDiaMean Diastolic Mean during Wake 0.00= 0.0 State . . 300= 300 138 7 7.2 SlDiaMean Diastolic Mean during Sleep 0.00= 0.0 State . . 300= 300 145 6 6.2 WkDiaStDev Diastolic SD during Wake State 0.00= 0.0 . . 1= 1 151 6 6.2 SlDiaStDev Diastolic SD during Sleep 0.00= 0.0 State . . 1= 1 157 5 5.2 WkDiaIndx Wake Diastolic Index based on 0= 0.00 95%ile Soergel 1997 Limits . . 1.99= 1.99 162 5 5.2 SlDiaIndx Sleep Diastolic Index based 0= 0.00 on 95%ile Soergel 1997 Limits . . 1.99= 1.99 167 6 6.1 DiaPctDipping ((Wake Mean Diastolic BP - -15= -15.0 Sleep Mean Diastolic BP)/Wake . Mean Diastolic BP)*100 . 100.0= 100.0 173 7 7.2 WkHRMean HR Mean during wake state 0.0= 0.0 . . 160.00= 160.00 180 7 7.2 SlHRMean HR Mean during sleep state 0.0= 0.0 . . 160.00= 160.00 187 4 4.0 WkSys95Lim Wake Systolic Limit (95%ile 0.0 Soergel 1997 Limits) . . 200= 200 191 4 4.0 SlSys95Lim Sleep Systolic Limit (95%ile 0.0 Soergel 1997 Limits) . . 200= 200 195 4 4.0 WGSBP90Limit Working Group 90%ile Systolic 0.0= 0.0 Limit . . 200= 200 199 4 4.0 WGSBP95Limit Working Group 95%ile Systolic 0.0= 0.0 Limit . . 200= 200 203 4 4.0 WkDia95Lim Wake Diastolic Limit (95%ile 0.0= 0.0 Soergel 1997 Limits) . . 200= 200 207 4 4.0 SlDia95Lim Sleep Diastolic Limit (95%ile 0.0= 0.0 Soergel 1997 Limits) . . 200= 200 211 4 4.0 WGDBP90Limit Working Group 90%ile 0.0= 0.0 Diastolic Limit . . 200= 200 215 4 4.0 WGDBP95Limit Working Group 95%ile 0.0= 0.0 Diastolic Limit . . 200= 200 219 4 4.0 WkSysLoad Wake State % systolic 0= 0 readings greater than or . equal to 95%ile Soergel . 1997limit 100= 100 223 4 4.0 SlSysLoad Sleep State % systolic 0= 0 readings greater than or . equal to 95%ile Soergel . 1997limit 100= 100 227 4 4.0 WkDiaLoad Wake State % Diastolic 0= 0 readings greater than or . equal to limit . 100= 100 231 4 4.0 SlDiaLoad Sleep State % Diastolic 0= 0 readings greater than or . equal to limit . 100= 100 235 2 2.0 WkSysMeangtLim Systolic Mean during Wake 0= Mean less than or equal to state greater than Soergel Soergel limit 95%ile limit 1= Mean greater than Soergel limit 237 2 2.0 SlSysMeangtLim Systolic Mean during Sleep 0= Mean less than or equal to state greater than Soergel Soergel limit 95%ile limit 1= Mean greater than Soergel limit 239 2 2.0 WkDiaMeangtLim Diastolic Mean during wake 0= Mean less than or equal to state greater than Soergel Soergel limit 95%ile limit 1= Mean greater than Soergel limit 241 2 2.0 SlDiaMeangtLim Diastolic Mean during sleep 0= Mean less than or equal to state greater than Soergel Soergel limit 95%ile limit 1= Mean greater than Soergel limit 243 2 2.0 WkSysLoadgt25 Systolic Load during wake 0= Load less than or equal to 25% state greater than 25% 1= Load greater than 25% 245 2 2.0 SlSysLoadgt25 Systolic Load during sleep 0= Load less than or equal to 25% state greater than 25% 1= Load greater than 25% 247 2 2.0 WkDiaLoadgt25 Diastolic Load during wake 0= Load less than or equal to 25% state greater than 25% 1= Load greater than 25% 249 2 2.0 SlDiaLoadgt25 Diastolic Load during sleep 0= Load less than or equal to 25% state greater than 25% 1= Load greater than 25% 251 2 2.0 SysPctDiplt10 Systolic Dipping Percent less 0= Dipping greater than or equal to than 10 10% 1= Dipping less than 10% 253 2 2.0 SysPctDipgt10lt20 Systolic Dipping Percent 0= Dipping less than 10% or greater between 10% and 20% than 20% 1= Dipping greater than or equal to 10% and less than 20% 255 2 2.0 SysPctDipgt20 Systolic Dipping Percent 0= Dipping less than 20% greater than 20 1= Dipping greater than or equal to 20% 257 2 2.0 DiaPctDiplt10 Diastolic Dipping Percent 0= Dipping greater than or equal to less than 10 10% 1= Dipping less than 10% 259 2 2.0 DiaPctDipgt10lt20 Diastolic Dipping Percent 0= Dipping less than 10% or greater between 10% and 20% than 20% 1= Dipping greater than or equal to 10% and less than 20% 261 3 2.0 DiaPctDipgt20 Systolic Dipping Percent 0= Dipping less than 20% greater than 20 1= Dipping greater than or equal to 20% 264 3 2.0 ABPMSuccess Indicator variable for 0= Not successful ABPM Successful ABPM: >21 hours 1= Successful ABPM collected, no more than 3 -1= NA total missed hours, wake -9= missing success rate = 75%, sleep success rate = 75% 267 5 4.1 AgeCaution Years of age above 17 years 0= Equal or less than 17 years old old: For participants aged 18 . years or older, blood . pressure percentitles and z 19.9= 19.9 years above age 17 scores should be used with caution 272 6 $ VERSION Version number of data V01.01= Version 01, in Visit 01. . . V99.03= Version 03, in Visit 99.