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Table 3 Means (and SDs) for the state and trait measures of everyday mood and cognitive variables for social class, also showing age*social class interactions

From: Mood and cognition in healthy older European adults: the Zenith study

Variable 55-70 yrs 70-87 yrs   
  Professional Skilled Unskilled Professional Skilled Unskilled Social class differences Age*Social class interactions
State mood
State PA 33.29 (5.6) 33.65 (6.3) 34.92 (6.1) 29.35 (9.2) 27.37 (9.6) 25.38 (7.4) p = 0.590 p = 0.142
State NA 13.40 (4.5) 14.65 (5.4) 15.21 (5.5) 13.58 (5.5) 13.94 (5.7) 14.38 (5.1) p = 0.285 p = 0.740
Trait mood and mood variability measures
Trait PA 27.53 (4.8) 27.34 (6.0) 28.74 (5.6) 23.48 (8.0) 21.69 (7.5) 23.75 (6.3) p = 0.235 p = 0.571
Trait PA variability 5.30 (2.2) 5.44 (2.0) 4.83 (1.8) 4.13 (2.1) 3.91 (2.0) 4.21 (2.4) p = 0. 894 p = 0.474
Trait NA 11.65 (2.3) 11.59 (2.3) 11.84 (2.2) 12.16 (3.7) 12.50 (3.4) 13.28 (3.0) p = 0.521 p = 0.677
Trait NA variability 1.64 (1.6) 1.44 (1.1) 1.41 (1.2) 1.63 (1.6) 1.65 (1.3) 2.42 (1.9) p = 0.403 p = 0.194
Cognitive function
Pattern recognition memory (ms) 2346.60 (572.9) 2500.22 (791.7) 2722.75 (734.7) 3043.21 (1269.4) 2978.45 (1509.2) 3270.22 (1223.3) p = 0.375 p = 0.688
Spatial working memory (total errors) 35.56 (18.4) 34.52 (21.1) 48.57 (17.5) 29.18 (20.9) 36.63 (22.5) 38.19 (23.3) p= 0.023 p = 0.102
5-Choice reaction time (ms) 378.62 (53.4) 384.58 (62.9) 404.63 (61.9) 439.90 (117.9) 446.03 (91.1) 447.04 (50.7) p = 0.544 p = 0.813
Match to sample visual search (ms) 3044.68 (972.9) 2882.20 (949.2) 3592.38 (1376.8) 3999.73 (1368.7) 3837,19 (1289.9) 4936,15 (2031.2) p= 0.001 p = 0.684
  1. Significant effects are given in bold.