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Table 3 Correlation matrix among variables

From: Work-life balance predicted work ability two years later: a cohort study of employees in the Swedish energy and water sector

  Min - max 1 2 3 4 5 6 7 8 9 10 11 12 13
1. Sex 1–2              
2. Age 21–64 -,09             
3. Education level 1–3 .26** −.25**            
4. Company 1–3 −.02 −.02 −.11           
5. Position at work 1–3 .14* −.01 .38** −.07          
6. Experience with leadership qualitya 1–6 .06 .04 .07 .03 .19**         
7. WIPLb 1–5 −.20** .07 −.27** .04 −.24** −.02        
8. PLIWb 1–5 .00 .14* −.23** −.024 −.11 −.02 .39**       
9. Work ability compared with the lifetime best at T0 0–10 −.03 −.10 −.10 −.14* −.08 .06 .38** .40**      
10. Work ability regarding physical demands at T0 1–5 −.13* −.07 .10 .10 .14* .19** .24** .14* .46**     
11. Work ability regarding mental demands at T0 1–5 −.09 −.05 −.06 .046 −.06 .20** .36** .27** .68** .59**    
12. Work ability compared with the lifetime best at T1 0–10 −.02 −.07 −.02 .03 .02 .09 .34** .37** .56** .38** .48**   
13. Work ability regarding physical demands at T1 1–5 .08 −.09 .17* .03 .16* .22** .22** .17* .33** .44** .36** .53**  
14. Work ability regarding mental demands at T1 1–5 −.10 −.01 .03 −.05 −.02 .14* .36** .28** .45** .32** .46** .65** .56**
  1. The matrix has been calculated with Spearman’s correlation coefficient
  2. Maximum (max), minimum (min) of the scale or index, and correlations indicated
  3. aExperience with leadership quality was measured with an 7 item index ranging from 1 to 6
  4. bWork interference with personal life (WIPL) and personal life interference with work (PLIW), was both three item index scales, ranging from 1 to 5
  5. cWork ability outcome in the matrix was measured at follow-up
  6. * Correlation is significant at the 0.05 level
  7. ** Correlation is significant at the 0.01 level