Ono et al. [31] Pirilä-Parkkinen
et al. [32]
Zhang et al. [38] Glupker et al. [39]
I. Study design
(maximum score = 11 points)
A. Time 2 2 2 1
B. Randomized sample 0 0 0 0
C. Control group 0 1 0 0
D. Sample size 0 2 0 1
E. Sample gender 1 0 0 1
F. Objective 1 1 1 0
G. Selection criteria 1 1 1 1
H. Baseline characteristics 0 1 0 0
Score 5 8 4 4
II. Study measurements
(maximum score = 9 points)
A. Segmentation method
(manually or automated)
0 0 0 0
B. Part of airway 1 1 1 0
C. Type of airway measurements 3 2 3 2
D. Airway measurements adjusted 0 0 0 0
E. Method of acquisition 1 1 1 0
F. Blinding measurements method 0 0 0 1
Score 5 4 5 3
III. Data analysis
(maximum score = 4 points)
A. Statistical analysis 1 1 1 1
B. Validation of measurements
(error of the method)
0 1 0 1
C. Data presentation 2 2 2 2
Score 3 4 3 4
Total score 13 16 12 11
Total score % 13/24 x 100 ≈ 54 16/24 x 100 ≈ 67 12/24 x 100 ≈ 50 11/24 x 100 ≈ 46
Mean quality % of the studies (54 + 67 + 50 + 46)/4 = 54