Table 3.
Comparison of measures at surveys 1 (1996), 6 (2010), 7 (2013), and 8 (2016) from women in the 1946-1951 cohort of the Australian Longitudinal Study on Women’s Health who responded to surveys 7 and 8, according to their mode of survey completion.
| Characteristics | Online/online (n=2424) | Online/paper (n=1151) | Paper/online (n=73) | Paper/paper (n=3800) | P value | |
| Age at survey 1, mean | 47.44 | 47.45 | 47.45 | 47.68 | <.001 | |
| Body mass index |
|
|
|
|
|
|
|
|
Survey 1 | 25.40 | 25.45 | 25.51 | 25.92 | <.001 |
|
|
Change from survey 6 to survey 7 | 0.09 | 0.23 | 0.23 | 0.17 | .20 |
|
|
Change from survey 7 to survey 8 | –0.01 | 0.01 | –0.01 | 0.09 | .23 |
| SF-36a subscale for physical function |
|
|
|
|
|
|
|
|
Survey 1 | 88.94 | 88.00 | 88.91 | 86.40 | <.001 |
|
|
Change from survey 6 to survey 7 | –1.75 | –2.07 | –1.07 | –1.65 | .61 |
|
|
Change from survey 7 to survey 8 | –1.07 | –1.97 | –1.40 | –2.34 | .02 |
| SF-36 subscale for mental health |
|
|
|
|
|
|
|
|
Survey 1 | 75.89 | 75.09 | 75.52 | 74.24 | <.001 |
|
|
Change from survey 6 to survey 7 | 0.72 | 1.00 | 0.99 | 0.56 | .77 |
|
|
Change from survey 7 to survey 8 | –0.39 | –0.68 | –0.18 | 0.07 | .35 |
aSF-36: 36-Item Short Form Health Survey.