Table 1 Characteristics of study design, PSDB diagnosis, and included article quality
From: Mean platelet volume levels in children with sleep-disordered breathing: a meta-analysis
Authors | Country | Study design | Evaluations | PSDB Diagnosis | MINORS |
|---|---|---|---|---|---|
Kucur et al. [23] | Turkey | Prospective study/ comparative study | Endoscopy | Children had grade 3 (50 to 75% of choanal space) or 4 (75 to 100% of choanal space) adenoid hypertrophy | 16 |
Onder et al. [24] | Turkey | Prospective study/ noncomparative study | Cephalometry | Children with enlarged adenoid (adenoid/nasopharynx ratio > 0.7) | 9 |
Soyalic et al. [25] | Turkey | Prospective study/ comparative study | Endoscopy | Children had grade 3 (adenoid tissue fill 50–75% of choana) or 4 (adenoid tissue fill 75–100% of choana) adenoids, and 3+ (50–75% of airway obstruction) or 4+ (airway obstruction > 75%) tonsil hypertrophy | 19 |
Simsek et al. [26] | Turkey | Retrospective study/ comparative study | Endoscopy | Children with adenoid hypertrophy (choanal space ≥50%) or chronic tonsillitis (repeated attacks ≥4 or 5 per year) | 20 |
Zicari et al. [27] | Italy | Clinical study/ comparative study | Endoscopy and polysomnography | Children had primary snoring (snoring without apnea, abnormal sleep, or abnormal gas exchange) and obstructive sleep apnea (partial upper airway obstruction, intermittent complete obstruction during sleep, and loss of normal ventilation during sleep) | 18 |
Erdim et al. [28] | Turkey | Retrospective study/ comparative study | Polysomnography | Children with predicting sleep apnea (apnea-hypopenea index > 1) | 17 |
Barceló et al. [29] | Spain | Case-control study/ comparative study | Polysomnography | Children with snoring and obstructive sleep apnea (apnea-hypopenea index > 1, decrease of hypopnea ≥30%) | 17 |