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Table 1 Sample characteristics for the initial and repeat surveys

From: Testing the feasibility of eliciting preferences for health states from adolescents using direct methods

  Initial survey
n (%)
Repeat survey
n (%)
Test for differences
Total sample 144 103  
Age
 10 3 (2) 2 (2) t = 0.027
p = 0.978
 11 2 (1) 0 (0)
 12 13 (9) 10 (10)
 13 26 (18) 20 (19)
 14 27 (19) 23 (22)
 15 28 (19) 18 (17)
 16 18 (12) 9 (9)
 17 27 (19) 19 (18)
 18 0 (0) 2 (2)
School grade
 4 1 (1) 0 (0) Chi2 = 2.886
p = 0.941
 5 5 (3) 3 (3)
 6 5 (3) 6 (6)
 7 15 (10) 10 (10)
 8 23 (16) 13 (13)
 9 34 (24) 24 (23)
 10 19 (13) 18 (17)
 11 22 (15) 14 (14)
 12 20 (14) 15 (15)