Table 3 Linear mixed model estimates of between-person and within-person changes in sitting behaviour associated with changes in parental status and employment status over 5 years (2007/08–2011/13)

Model 1

Model 2

% of Change

Model 3

% of Change

β (95% CI)

β (95% CI)

β (95% CI)

Change in parental status

 Between-person effects

  Never had children

Ref

  Living with children < 18 during study

−6.6 (− 8.9, − 4.4)***

−6.1 (− 8.3, − 3.8)***

−7.6%

− 4.4 (− 6.7, − 2.1)***

−27.9%

Within-person effects

 Never had children

Ref

 Number of children remained unchanged

−4.6 (−6.9, − 2.3)***

−4.1 (− 6.4, − 1.7)**

−10.9%

−4.0 (− 6.5, − 1.4)**

− 2.4%

 First child/ additional children

−4.1 (− 6.7, − 1.6)**

−4.2 (− 6.7, − 1.6)**

2.4%

−4.2 (− 6.9, − 1.6)**

0.0%

 Fewer children < 18 yrs. living at home

−3.6 (− 6.8, −0.2)*

− 2.7 (− 6.1, 0.7)

−25.0%

− 2.8 (− 6.4, 0.8)

3.7%

Change in employment status

 Between-person effects

  Employed full-time during the study period

Ref

  Not employed full-time during study period

−5.6 (− 7.1, −4.2)***

−5.1 (− 5.8, −2.3)***

−8.9%

−3.8 (− 5.7, − 2.1)***

− 25.5%

Within-person effects

 Remained full-time during the study period

Ref

 Remained part-time/notworking

−0.3 (−2.1, 1.4)

− 0.2 (− 2.1, 1.5)

−33.3%

−1.0 (− 2.9, 0.9)

400.0%

 Increased working hours

−2.5 (−4.5, − 0.5)*

−2.4 (− 4.4, − 0.4)*

−4.0%

−2.4 (− 4.5, − 0.3)*

0.0%

 Reduced working hours

− 2.6 (− 4.8, − 0.3)*

−2.5 (− 4.7, − 0.2)*

− 3.8%

−2.2 (− 4.5, − 0.1)*

− 12.0%