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Table 1 Social and demographic data

From: False positive morphologic diagnoses at the anomaly scan: marginal or real problem, a population-based cohort study

  Total cohort (n = 526) % False positives (n = 39) % Misclassification (n = 49) % True positive (n = 438) % p1
Maternal age (n = 526) (n = 39) (n = 49) (n = 435)  
 <25 years 18.1 19.2 22.5 17.5 0.62
 25-34 years 62.3 65.9 59.2 62.3  
 ≥35 years 19.6 15.9 18.4 20.2  
Educational level (n = 279) (n = 22) (n = 25) (n = 232)  
 Primary and middle school 24.6 20.8 20.0 25.4 0.81
 High school 20.3 16.7 16.0 21.1  
 Post-secondary 55.2 62.5 64.0 53.5  
Smoking (n = 482) (n = 40) (n = 43) (n = 399)  
28.5 32.6 20.9 28.8 0.45
BMI 2≥ 25 (n = 526) (n = 39) (n = 49) (n = 438)  
11.6 8.5 0 13.2 0.02
Consanguinity (n = 526) (n = 39) (n = 49) (n = 438)  
2.3 6.5 0 2.1 0.08
  1. 1Comparison of 3 groups: False positives, Misclassifications, True positives; 2BMI (Body Mass Index).