Definition of abbreviations
BMI: body mass index
CI: confidence interval
CSHQ: Children’s Sleep Habits Questionnaire
FeNO: fractional exhaled nitric oxide
FEV1/FVC: forced expiratory volume in 1 second/forced vital capacity
GRS: genetic risk score
IV: instrumental variable
IVW: inverse-variance weighted
MR: Mendelian randomization
OR: odds ratio
RCT: randomized controlled trial
SDB: sleep-disordered breathing
SNP: single-nucleotide polymorphism
TCHS: Taiwan Children Health Study
TDCS: Tanner-derived composite stage
2SLS: two-stage least square