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Table 2 Summary of group differences (for variables with p < 0.2) between high adherers and low adherers

From: Adherence to treatment in children and adolescents with cystic fibrosis: a cross-sectional, multi-method study investigating the influence of beliefs about treatment and parental depressive symptoms

Treatment Parameter High- adherers Low-adherers p
Enzyme supplements Age n = 23 n = 58  
Median (IQR) 6 (2-10) 11.5 (7.5-15) ≤0.001*
  Colonisation status    
n (%)    
P.aeruginosa    
Chronic (n = 11) 0 (0) 11 (19)  
Not chronic (n = 70) 23 (100) 47 (81) 0.029*
  BMQ (parent) n = 23 n = 58  
median (IQR)    
Necessity 85 (80-100) 80 (65-96) 0.129§
Concern 21 (13-38) 29 (17-42) 0.073§
  BMQ (child) n = 2 n = 31  
median (IQR)    
Concern 6 (N/A) 21 (13-33) 0.120§
Vitamins Age n = 40 n = 58 0.074§
Median (IQR) 9 (3-12) 12 (6-15)  
  Colonisation status    
n (%)    
P.aeruginosa    
Chronic (n = 12) 2 (5) 10 (17)  
Not chronic (n = 1) 38 (95) 48 (83) 0.115§
  Presence of concurrent medical condition    
n (%)    
Yes (n = 15) 9 (23) 6 (10)  
No (n = 83) 31 (78) 52 (90) 0.175§
  BMQ (parent) n = 40 n = 58  
median (IQR)    
Concern 17 (4-25) 21 (8-33) 0.117§
  CES-D (parent) n = 37 n = 51  
Median (IQR) 6 (3-14) 11 (5-15) 0.073§
Chest physiotherapy Age n = 50 n = 48 ≤0.001*
Median (IQR) 7 (2-11) 13 (8-15)
  Number of medications currently prescribed n = 50 n = 48  
Median (IQR) 6 (5-8) 5 (4-8) 0.080§
  Presence of concurrent medical condition    
n (%)    
Yes (n = 16) 4 (8) 12 (25)  
No (n = 82) 46 (92) 36 (75) 0.045*
  BMQ (parent) n = 50 n = 48  
median (IQR)    
Necessity 95 (85-100) 80 (70-95) 0.001*
Concern 25 (22-33) 33 (23-47) 0.032*
  1. §p < 0.2; *p < 0.05; IQR inter-quartile range; BMQ Beliefs about Medicines Questionnaire; CES-D Centre for Epidemiologic Studies Depression Scale.
  2. Full results available in Additional file 1.