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Table 3 Means, standard deviations, reliabilities, and correlations of between- and within-level variables

From: A three-wave longitudinal study on the relation between commuting strain and somatic symptoms in university students: exploring the role of learning-family conflicts

  M SD ICC 1 2 3
Between-level       
1. Age 20.70 3.47   
2. Sex1 0.30 0.46 .01  
3. Commuting distance 25.48 28.47 − .06 .04
4. Commuting time 46.05 35.02 − .05 − .05 .80**
Within-level       
1. Commuting strain 1.92 1.02 .602   
2. Learning-family conflict 3.46 1.11 .66 − .01 (.93)  
3. Somatic symptoms 1.47 0.29 .68 − .02 .04 (.77)
  1. NWithin = 339; NBetween = 128. Cronbach’s alphas on the diagonal for day-level variables are mean internal consistencies averaged over all measurement points
  2. 1sex coded as 1 = female and 0 = male
  3. 2 For commuting strain ICC was calculated for conventional reporting, but caution is required because of the ordinal scale of this variable
  4. ** p < .01; * p < .05