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Table 3 Frequency and z-Test of Proportions between TS youth and Control Groups in Personality Traits with Positive and Negative Impact on Friendship

From: Factors impacting the quality of peer relationships of youth with Tourette’s syndrome

Personality Trait With Positive Impact Group Test of Difference in Proportions (two-tailed)
  TS Group Control Group z p
n = 86 n = 92   
n (%) n (%)   
 High Extraversion 48 (56) 84 (91) 5.77 < .001
 Low Neuroticism 9 (11) 45 (49) 6.18 < .001
 High Agreeableness 24 (28) 42 (46) 2.48 .01
 High Openness 15 (17) 15 (16) 0.19 .85
 High Conscientiousness 0 2 (2) 1.40 .16
Personality Trait With Negative Impact     
 Extraversion 8 (19) 1 (1) 4.12 < .001
 Introversion 10 (12) 12 (13) 0.28 .77
 High Neuroticism 25 (29) 1 (1) 5.55 < .001
 Agreeableness 0 1 (1) 1.01 .31
 Low Agreeableness 12 (14) 2 (2) 2.89 .004
 Low Openness 0 5 (7.7 %)   
 Conscientiousness 0 4 (4) 2.02 .04
 Low Conscientiousness 0 3 (3) 1.76 .08