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. 2014 Dec 12;9(12):e114977. doi: 10.1371/journal.pone.0114977

Table 1. Demographics and Psychological Tests Scores of sample divided by sex and site with ttest comparison between PR and MA (ethnic) and between females and males (sex) at each site.

Demographic Data PR females Mean (s.d.) MA females Mean (s.d.) PR males Mean (s.d.) MA males Mean (s.d.) ttest Ethnic Comparison (PR vs MA) ttestSex Comparison (females vs males)
females males PR MA
Age 25 (3) 24 (3) 26 (3) 25 (4.01) 0.461 0.515 0.358 0.139
Educational level 16.60 (2) 16.34 (1.5) 17 (3) 16.95 (2.01) 0.661 0.657 0.827 0.303
NEO-FFI
Neuroticism 49.25 (8.42) 37.47 (7.37) 43.00 (2.70) 45.13 (2.45) <0.001 0.589 0.063 0.023
Extraversion 57.95 (8.11) 60.88 (8.80) 55.53 (2.15) 57.27 (1.89) 0.299 0.575 0.393 0.364
Openness 54.3 (10.80) 60.71 (9.95) 56.68 (2.65) 63.64 (1.56) 0.071 0.053 0.509 0.356
Agreeableness 48.1 (9.81) 59.17 (14.2) 45.58 (2.78) 49.6 (3.11) 0.008 0.368 0.478 0.014
Conscientiousness 48.75 (12.0) 53.65 (12.4) 47.84 (1.81) 49.93 (1.91) 0.231 0.469 0.783 0.195
STAI
Trait Anxiety 32.6 (6.85) 31 (6.89) 29.63 (1.95) 33.24 (1.28) 0.509 0.148 0.237 0.201
State Anxiety 29.9 (6.91) 30.3 (6.89) 26.17 (0.92) 30.13 (1.39) 0.897 0.042 0.068 0.721