Understanding Society User Support: Issueshttps://iserredex.essex.ac.uk/support/https://iserredex.essex.ac.uk/support/support/favicon.ico?15995719382017-10-25T14:46:38ZUnderstanding Society User Support
Redmine Understanding Society User Support - Support #869 (Closed): Unexpectedly strong gender homophily ...https://iserredex.essex.ac.uk/support/issues/8692017-10-25T14:46:38ZTill Hoffmann
<a name="Summary"></a>
<h1 >Summary<a href="#Summary" class="wiki-anchor">¶</a></h1>
<p>I am interested in homophily effects that can be derived from the social network questions in waves B, D, F, H, J, L, N, P, R of the BHPS and waves C and F of Understanding Society. Homophily with respect to occupational status is relatively constant across all waves, and age homophily only changes slightly. However, homophily with respect to gender increases sharply from the last wave of the BHPS (R) to the first wave of Understanding Society (C). Do you happen to have any ideas whether a data error (or misuse on my part) might cause such an effect?</p>
<a name="Details-and-code-for-reproducing-the-observations"></a>
<h1 >Details and code for reproducing the observations<a href="#Details-and-code-for-reproducing-the-observations" class="wiki-anchor">¶</a></h1>
<p>For each wave of the survey I compute the contingency table of the sex of the ego (respondent) and alter (nominated friend) and apply the Fisher exact test (<a class="external" href="https://en.wikipedia.org/wiki/Fisher%27s_exact_test">https://en.wikipedia.org/wiki/Fisher%27s_exact_test</a>) to compute the odds ratio of association and test for statistical significance.</p>
<p>To account for effects of the survey design I use the weight <pre>#xrwght</pre> for the BHPS and <pre>#_indscub_xw</pre> for Understanding Society (the results are similar when omitting the survey weights). The results below include survey weights but the contingency tables have been rounded to the nearest integer. The code to reproduce the results can be found here: <a class="external" href="https://gist.github.com/tillahoffmann/e48dbc3546c418561263d181b2bda694">https://gist.github.com/tillahoffmann/e48dbc3546c418561263d181b2bda694</a></p>
<p>Thank you very much for your help!</p>
<pre>
BHPS wave: b
Contingency table
[[ 8862 3011]
[ 2202 11176]]
Odds ratio: 14.947, p-value: 0.000000
BHPS wave: d
Contingency table
[[ 8435 2817]
[ 2053 11044]]
Odds ratio: 16.116, p-value: 0.000000
BHPS wave: f
Contingency table
[[ 8500 3253]
[ 2195 11149]]
Odds ratio: 13.277, p-value: 0.000000
BHPS wave: h
Contingency table
[[ 8328 3034]
[ 1980 10994]]
Odds ratio: 15.249, p-value: 0.000000
BHPS wave: j
Contingency table
[[ 7936 2935]
[ 1941 10541]]
Odds ratio: 14.697, p-value: 0.000000
BHPS wave: l
Contingency table
[[ 7625 2791]
[ 1888 10157]]
Odds ratio: 14.696, p-value: 0.000000
BHPS wave: n
Contingency table
[[7320 2663]
[1827 9780]]
Odds ratio: 14.713, p-value: 0.000000
BHPS wave: p
Contingency table
[[7099 2597]
[1714 9436]]
Odds ratio: 15.052, p-value: 0.000000
BHPS wave: r
Contingency table
[[ 7682 2910]
[ 1964 10312]]
Odds ratio: 13.865, p-value: 0.000000
Understanding Society wave: c
Contingency table
[[36818 9400]
[ 6777 44476]]
Odds ratio: 25.710, p-value: 0.000000
Understanding Society wave: f
Contingency table
[[30372 7348]
[ 5004 36279]]
Odds ratio: 29.972, p-value: 0.000000
</pre> Understanding Society User Support - Support #687 (Closed): Unusual age distribution after condit...https://iserredex.essex.ac.uk/support/issues/6872016-12-19T12:34:55ZTill Hoffmann
<p>Conditioning on the variable `wJBSTATT` (<a class="external" href="https://www.iser.essex.ac.uk/bhps/documentation/volb/wave18/rindresp18.html#RJBSTATT">https://www.iser.essex.ac.uk/bhps/documentation/volb/wave18/rindresp18.html#RJBSTATT</a>) being well-defined (i.e. non-negative) has only negligible impact for most waves of the BHPS. However, for wave `R`, the age distribution is altered significantly as shown in the attached plot of the complementary cumulative distribution function. Do you have any idea why this might be the case?</p>
<p><img src="https://cloud.githubusercontent.com/assets/966348/21310663/560612c6-c5db-11e6-964a-855fb7c7888e.png" alt="" /></p> Understanding Society User Support - Support #417 (Closed): Choice of income bands in proxy quest...https://iserredex.essex.ac.uk/support/issues/4172015-09-15T08:32:31ZTill Hoffmann
<p>I have a short question regarding the proxy question on annual earnings (Prearna) in the seventh wave of Understanding Society. The question asks for the total earnings before taxes. The respondent is shown a card with twelve different income bands. I would like to find out how the income bands were chosen.</p>
<p>Thanks for your time and I look forward to hearing from you.</p>