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Table 1 Baseline and sleep parameters

From: Differences in self-reported weekend catch up sleep between children and adolescents with and without primary hypertension

  HBP group (mean ± SD or %) Control group (mean ± SD or %) P value P value adjusted for Race, Caffeine use, BMI-SDS, Daytime Nap, SRBD scale and PLMS scale
N 60 60   
Age (years) 14.2 ± 3.3 14.2 ± 3.3 0.96  
Gender (Male) 70 70 0.70  
Race (whites) 58 62 0.371  
BMI 25.8 ± 5.5 21.9 ± 4.2 < 0.00  
BMI- SDS 1.26 ± 0.99 0.55 ± 0.85 < 0.00  
BMI Percentile 82 ± 24 66 ± 23 < 0.00  
SBP mm Hg 131.5 ± 13.8 112.7 ± 9.6 < 0.00  
DBP mm Hg 79.4 ± 7.8 71.3 ± 6.7 < 0.00  
SRBD > 0.33 18 (30) 12 (20) 0.31  
PLMS > 0.33 20 (33.3) 17 (28.3) 0.64  
WD Bedtime (in decimal)
(hour:min)
9.70 ± 1.02
9:42 PM
9.78 ± 0.99
9:47 PM
0.65 0.918
WE Bedtime (in decimal)
(hour:min)
10.97 ± 1.34
10:59 PM
11.25 ± 1.40
11:15 PM
0.28 0.209
WD OOB time (in decimal)
(hour:min)
6.55 ± 0.88
6:33 AM
6.47 ± 64
6:28 AM
0.62 0.526
WE OOB time (in decimal)
(hour:min)
8.86 ± 1.55
8:52 AM
9.6 ± 1.46
9:36 AM
0.007 0.013
WD TST (minutes) 530.9 ± 74.9 519.6 ± 76.6 0.42 0.530
WE TST (minutes) 593.7 ± 79.1 622.3 ± 80.9 0.053 0.081
WE-WD TST (minutes) 62.8 ± 85.5 102.7 ± 84.9 0.012 0.035
PDSS total 8.28 ± 4.88 10.63 ± 5.41 0.014 0.007
Daytime nap - Yes 15 (25) 7 (11) 0.060  
Caffeine users 16 (26.6) 22 (36.6) 0.33  
  1. BMI Body mass index, BMI-SDS body mass index standard deviation score, SBP systolic blood pressure, DBP diastolic blood pressure, SRBD sleep related breathing disorder scale score, PLMS periodic limb movements in sleep scale score, WD Bedtime weekday going to bed time, WE Bedtime weekend going to bed time, WD OOB week day getting out of bed time, WE OOB weekend getting out of bed time, WD TST weekday total sleep time, WE TST weekend total sleep time, WE-WD TST Weekend catchup sleep time calculated as WE TST minus WD TST, PDSS pediatric daytime sleepiness scale