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Table 3 Baseline correlations among participants and non-participants at one-year and 15- year follow-ups

From: Attrition and generalizability in longitudinal studies: findings from a 15-year population-based study and a Monte Carlo simulation study

Predictors of HSCL

Drop-outs at one- year follow-up N = 155

Participants at one- year follow-up N = 758

Drop-outs at 15-year follow-up N = 514

Participants at 15- year follow-up N = 399

Women:

 Age

-.12

-.17**

-.14**

-.18**

 Alone with child

.19*

.12**

.16**

.09

 Family finances

-.33**

-.28**

-.29**

-.28**

 Education

-.15

-.18**

-.20**

-.13**

 Not working

.16

.14**

.14**

.14**

 Emotionality

.65**

.55**

.53**

.62**

 Sociability

-.16*

-.19**

-.22**

-.13*

 Activity

.00

-.01

-.01

-.01

 Partner support

-.46**

-.37**

-.38**

-.40**

 Emotional support from friends and family

-.28**

-.34**

-.33**

-.32**

 Chronic stressors

.55**

.54**

.52**

.56**

Children:

 Activity

-.04

-.05

-.04

-.05

 Sociability

-.04

.03

.05

-.02

 Emotionality

.33**

.22**

.26**

.20**

 Shyness

.11

.07*

.07

.09

  1. * p < .05, ** p < .01. None of the correlations between HSCL and other variables were significantly different among those who later stayed in the study and those who dropped out.