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Table 4 Characteristics associated with response to questionnaire (N = 1058 total)

From: Determinants of response to a parent questionnaire about development and behaviour in 3 year olds: European multicentre study of congenital toxoplasmosis

Characteristic Number responding (%) Odds ratio for response4 (95% confidence interval) Final model: Adjusted odds ratio5 (95% CI)
All centers 714 (67.5)   
Center Variables    
Lyon (reference) 134 (72.8) reference  
Paris 91 (50.0) 0.37 (0.24, 0.57)  
Grenoble 8 (23.5) 0.11 (0.05, 0.27)  
Marseille 69 (75.8) 1.16 (0.65, 2.06)  
Nice 33 (75.0) 1.12 (0.53, 2.38)  
Toulouse 44 (60.3) 0.56 (0.31, 0.99)  
Copenhagen 9 (64.3) 0.67 (0.21, 2.1)  
Vienna 134 (71.7) 0.97 (0.61, 1.54)  
Stockholm 8 (50.0) 0.37 (0.13, 1.05)  
Naples 50 (94.3) 6.22 (1.85, 20.84)  
Poznan 134 (74.4) 1.09 (0.68, 1.73)  
Total score for organisational attributes 3 9 (6,10) 1.36 (1.27, 1.45) 1.15 (1.09, 1.23)
Infection status 1    
CT+ 178 (80%) 2.95 (2.01, 4.31) 4.96 (3.58, 6.88)
CT- 527 (64%)   
Maternal age 1,2,3 (mean years, 95% CI) 582 (67%) 28.4 (27.6, 29.2) 1.03 (0.99, 1.07) 1.02 (0.99, 1.05)
Parity 1,2,3 (mean, 95% CI) 503 (67%) 0.9 (0.8, 1.0) 1.05 (0.90, 1.23)  
Gestational age at birth 1,2,3 (mean weeks, 95% CI) 530 (68%) 39.0 (38.8, 39.1) 1.00 (0.92, 1.09)  
Child's gender 1,2    
Male 379 (68%) Reference  
Female 316 (68%) 0.94 (0.71, 1.25)  
Prenatal treatment 1,2    
Any prescribed 532 (67%) 1.85 (0.98, 3.49)  
None 62 (66%)   
Neurological abnormality and/or intracranial lesions 1,2    
Yes 25 (83.3) 2.69 (0.56, 13.00)  
No 569 (66.3)   
  1. 1 Excludes 14 infected children from Denmark (9 responded), as no uninfected controls available.
  2. 2 Excludes 156 children in Poznan (134 responded), as uninfected control group selected from the general population had no information on these variables.
  3. 3 Odds ratio per unit increase in characteristic
  4. 4 Adjusted for congenital infection status and center
  5. 5 Adjusted for all factors shown. Goodness of fit statistic was close to 1 (1.0063)