Table 3 Descriptive statistics, N, Mean (SD) for the APSA scores at baseline

Educational level

Less than 10 years of education

44

1.4 (0.8)

1.3 (0.8)

1.6 (0.9)

10 or more years of education without a university degree

88

1.6 (0.7)

1.5 (0.8)

1.8 (0.8)

University degree

79

1.3 (0.6)

1.2 (0.7)

1.5 (0.7)

Country

US

116

1.5 (0.7)

1.4 (0.7)

1.7 (0.7)

Germany

59

1.6 (0.8)

1.5 (0.8)

1.7 (0.9)

Mexico

37

1.1 (0.7)

0.8 (0.7)

1.4 (0.8)

THI-12 categories

no handicap: THI-12 < 6

36

1.0 (0.6)

1.0 (0.7)

1.1 (0.7)

mild handicap: 6 ≤ THI-12 < 10

47

1.2 (0.5)

1.1 (0.6)

1.2 (0.5)

moderate handicap: 10 ≤ THI-12 < 14

63

1.4 (0.6)

1.2 (0.7)

1.7 (0.7)

severe handicap: THI-12 ≥ 14

63

1.9 (0.7)

1.8 (0.8)

2.2 (0.7)

Total

209

1.5 (0.7)

1.3 (0.8)

1.6 (0.8)