andrew_gelman_stats andrew_gelman_stats-2010 andrew_gelman_stats-2010-268 knowledge-graph by maker-knowledge-mining

268 andrew gelman stats-2010-09-10-Fighting Migraine with Multilevel Modeling


meta infos for this blog

Source: html

Introduction: Hal Pashler writes: Ed Vul and I are working on something that, although less exciting than the struggle against voodoo correlations in fMRI :-) might interest you and your readers. The background is this: we have been struck for a long time by how many people get frustrated and confused trying to figure out whether something they are doing/eating/etc is triggering something bad, whether it be migraine headaches, children’s tantrums, arthritis pains, or whatever. It seems crazy to try to do such computations in one’s head–and the psychological literature suggests people must be pretty bad at this kind of thing–but what’s the alternative? We are trying to develop one alternative approach–starting with migraine as a pilot project. We created a website that migraine sufferers can sign up for. The users select a list of factors that they think might be triggering their headaches (eg drinking red wine, eating stinky cheese, etc.–the website suggests a big list of candidates drawn


Summary: the most important sentenses genereted by tfidf model

sentIndex sentText sentNum sentScore

1 Hal Pashler writes: Ed Vul and I are working on something that, although less exciting than the struggle against voodoo correlations in fMRI :-) might interest you and your readers. [sent-1, score-0.18]

2 The background is this: we have been struck for a long time by how many people get frustrated and confused trying to figure out whether something they are doing/eating/etc is triggering something bad, whether it be migraine headaches, children’s tantrums, arthritis pains, or whatever. [sent-2, score-1.165]

3 It seems crazy to try to do such computations in one’s head–and the psychological literature suggests people must be pretty bad at this kind of thing–but what’s the alternative? [sent-3, score-0.356]

4 We are trying to develop one alternative approach–starting with migraine as a pilot project. [sent-4, score-0.675]

5 We created a website that migraine sufferers can sign up for. [sent-5, score-0.598]

6 The users select a list of factors that they think might be triggering their headaches (eg drinking red wine, eating stinky cheese, etc. [sent-6, score-0.999]

7 –the website suggests a big list of candidates drawn from the migraine literature). [sent-7, score-0.787]

8 Then, every day the user is queried about how much they were exposed to each of these potential triggers that day, as well as whether they had a headache. [sent-8, score-0.593]

9 After some months, the site begins to analyze the user’s data to try to figure out which of these triggers–if any–are actually causing headaches. [sent-9, score-0.161]

10 Our approach uses multilevel logistic regression as in Gelman and Hill, and or Gelman and Little (1997), and we use parametric bootstrapping to obtain posterior predictive confidence intervals to provide practical advice (rather than just ascertain the significance of effects). [sent-10, score-0.551]


similar blogs computed by tfidf model

tfidf for this blog:

wordName wordTfidf (topN-words)

[('migraine', 0.491), ('triggering', 0.245), ('headaches', 0.211), ('triggers', 0.211), ('users', 0.181), ('user', 0.127), ('ascertain', 0.112), ('cheese', 0.112), ('faq', 0.112), ('stinky', 0.112), ('website', 0.107), ('approach', 0.107), ('fmri', 0.105), ('alternative', 0.103), ('suggests', 0.101), ('betas', 0.101), ('outlined', 0.101), ('pashler', 0.101), ('voodoo', 0.101), ('gelman', 0.099), ('pains', 0.097), ('adequate', 0.097), ('trigger', 0.097), ('whether', 0.096), ('hyperparameters', 0.094), ('vul', 0.094), ('uninformative', 0.092), ('wine', 0.092), ('eg', 0.092), ('provide', 0.09), ('list', 0.088), ('bootstrapping', 0.088), ('computations', 0.086), ('crazy', 0.086), ('figure', 0.086), ('exposed', 0.085), ('literature', 0.083), ('parametric', 0.082), ('drinking', 0.082), ('pilot', 0.081), ('frustrated', 0.081), ('hal', 0.081), ('eating', 0.08), ('struggle', 0.079), ('causing', 0.075), ('start', 0.074), ('day', 0.074), ('pool', 0.073), ('regression', 0.072), ('struck', 0.07)]

similar blogs list:

simIndex simValue blogId blogTitle

same-blog 1 1.0 268 andrew gelman stats-2010-09-10-Fighting Migraine with Multilevel Modeling

Introduction: Hal Pashler writes: Ed Vul and I are working on something that, although less exciting than the struggle against voodoo correlations in fMRI :-) might interest you and your readers. The background is this: we have been struck for a long time by how many people get frustrated and confused trying to figure out whether something they are doing/eating/etc is triggering something bad, whether it be migraine headaches, children’s tantrums, arthritis pains, or whatever. It seems crazy to try to do such computations in one’s head–and the psychological literature suggests people must be pretty bad at this kind of thing–but what’s the alternative? We are trying to develop one alternative approach–starting with migraine as a pilot project. We created a website that migraine sufferers can sign up for. The users select a list of factors that they think might be triggering their headaches (eg drinking red wine, eating stinky cheese, etc.–the website suggests a big list of candidates drawn

2 0.10035326 2124 andrew gelman stats-2013-12-05-Stan (quietly) passes 512 people on the users list

Introduction: Stan is alive and well. We’re up to 523 people on the users list . [We're sure there are many more than 523 actual users, since it's easy to download and use Stan directly without joining the list.] We’re working on a v2.1.0 release now and we hope to release it in within the next couple of weeks.

3 0.090011455 1396 andrew gelman stats-2012-06-27-Recently in the sister blog

Introduction: If Paul Krugman is right and it’s 1931, what happens next? What’s with Niall Ferguson? Hey, this reminds me of the Democrats in the U.S. . . . Would President Romney contract the economy? Inconsistency with prior knowledge triggers children’s causal explanatory reasoning

4 0.088960253 2303 andrew gelman stats-2014-04-23-Thinking of doing a list experiment? Here’s a list of reasons why you should think again

Introduction: Someone wrote in: We are about to conduct a voting list experiment. We came across your comment recommending that each item be removed from the list. Would greatly appreciate it if you take a few minutes to spell out your recommendation in a little more detail. In particular: (a) Why are you “uneasy” about list experiments? What would strengthen your confidence in list experiments? (b) What do you mean by “each item be removed”? As you know, there are several non-sensitive items and one sensitive item in a list experiment. Do you mean that the non-sensitive items should be removed one-by-one for the control group or are you suggesting a multiple arm design in which each arm of the experiment has one non-sensitive item removed. What would be achieved by this design? I replied: I’ve always been a bit skeptical about list experiments, partly because I worry that the absolute number of items on the list could itself affect the response. For example, someone might not want to che

5 0.084834583 502 andrew gelman stats-2011-01-04-Cash in, cash out graph

Introduction: David Afshartous writes: I thought this graph [from Ed Easterling] might be good for your blog. The 71 outlined squares show the main story, and the regions of the graph present the information nicely. Looks like the bins for the color coding are not of equal size and of course the end bins are unbounded. Might be interesting to graph the distribution of the actual data for the 71 outlined squares. In addition, I assume that each period begins on Jan 1 so data size could be naturally increased by looking at intervals that start on June 1 as well (where the limit of this process would be to have it at the granularity of one day; while it most likely wouldn’t make much difference, I’ve seen some graphs before where 1 year returns can be quite sensitive to starting date, etc). I agree that (a) the graph could be improved in small ways–in particular, adding half-year data seems like a great idea–and (b) it’s a wonderful, wonderful graph as is. And the NYT graphics people ad

6 0.081437528 714 andrew gelman stats-2011-05-16-NYT Labs releases Openpaths, a utility for saving your iphone data

7 0.079792596 1842 andrew gelman stats-2013-05-05-Cleaning up science

8 0.079314202 723 andrew gelman stats-2011-05-21-Literary blurb translation guide

9 0.076720476 1465 andrew gelman stats-2012-08-21-D. Buggin

10 0.074880667 2176 andrew gelman stats-2014-01-19-Transformations for non-normal data

11 0.06899742 1717 andrew gelman stats-2013-02-10-Psychology can be improved by adding some economics

12 0.06835638 2042 andrew gelman stats-2013-09-28-Difficulties of using statistical significance (or lack thereof) to sift through and compare research hypotheses

13 0.067135856 1006 andrew gelman stats-2011-11-12-Val’s Number Scroll: Helping kids visualize math

14 0.06606824 2178 andrew gelman stats-2014-01-20-Mailing List Degree-of-Difficulty Difficulty

15 0.065916419 946 andrew gelman stats-2011-10-07-Analysis of Power Law of Participation

16 0.065165967 2129 andrew gelman stats-2013-12-10-Cross-validation and Bayesian estimation of tuning parameters

17 0.064651728 1970 andrew gelman stats-2013-08-06-New words of 1917

18 0.064510405 2208 andrew gelman stats-2014-02-12-How to think about “identifiability” in Bayesian inference?

19 0.064220399 1886 andrew gelman stats-2013-06-07-Robust logistic regression

20 0.063385293 2117 andrew gelman stats-2013-11-29-The gradual transition to replicable science


similar blogs computed by lsi model

lsi for this blog:

topicId topicWeight

[(0, 0.138), (1, 0.032), (2, 0.008), (3, -0.004), (4, 0.047), (5, -0.001), (6, 0.006), (7, -0.032), (8, -0.019), (9, 0.013), (10, -0.017), (11, -0.003), (12, 0.042), (13, -0.006), (14, 0.025), (15, 0.015), (16, -0.014), (17, -0.029), (18, 0.006), (19, 0.01), (20, 0.001), (21, 0.02), (22, 0.006), (23, -0.003), (24, 0.01), (25, -0.046), (26, 0.013), (27, -0.012), (28, -0.011), (29, 0.027), (30, 0.014), (31, -0.03), (32, 0.021), (33, 0.009), (34, -0.013), (35, -0.024), (36, -0.016), (37, 0.036), (38, -0.017), (39, -0.023), (40, 0.016), (41, -0.006), (42, 0.027), (43, -0.043), (44, -0.004), (45, 0.015), (46, -0.069), (47, -0.04), (48, 0.014), (49, 0.001)]

similar blogs list:

simIndex simValue blogId blogTitle

same-blog 1 0.95227242 268 andrew gelman stats-2010-09-10-Fighting Migraine with Multilevel Modeling

Introduction: Hal Pashler writes: Ed Vul and I are working on something that, although less exciting than the struggle against voodoo correlations in fMRI :-) might interest you and your readers. The background is this: we have been struck for a long time by how many people get frustrated and confused trying to figure out whether something they are doing/eating/etc is triggering something bad, whether it be migraine headaches, children’s tantrums, arthritis pains, or whatever. It seems crazy to try to do such computations in one’s head–and the psychological literature suggests people must be pretty bad at this kind of thing–but what’s the alternative? We are trying to develop one alternative approach–starting with migraine as a pilot project. We created a website that migraine sufferers can sign up for. The users select a list of factors that they think might be triggering their headaches (eg drinking red wine, eating stinky cheese, etc.–the website suggests a big list of candidates drawn

2 0.71901786 327 andrew gelman stats-2010-10-07-There are never 70 distinct parameters

Introduction: Sam Seaver writes: I’m a graduate student in computational biology, and I’m relatively new to advanced statistics, and am trying to teach myself how best to approach a problem I have. My dataset is a small sparse matrix of 150 cases and 70 predictors, it is sparse as in many zeros, not many ‘NA’s. Each case is a nutrient that is fed into an in silico organism, and its response is whether or not it stimulates growth, and each predictor is one of 70 different pathways that the nutrient may or may not belong to. Because all of the nutrients do not belong to all of the pathways, there are thus many zeros in my matrix. My goal is to be able to use the pathways themselves to predict whether or not a nutrient could stimulate growth, thus I wanted to compute regression coefficients for each pathway, with which I could apply to other nutrients for other species. There are quite a few singularities in the dataset (summary(glm) reports that 14 coefficients are not defined because of sin

3 0.66286373 2303 andrew gelman stats-2014-04-23-Thinking of doing a list experiment? Here’s a list of reasons why you should think again

Introduction: Someone wrote in: We are about to conduct a voting list experiment. We came across your comment recommending that each item be removed from the list. Would greatly appreciate it if you take a few minutes to spell out your recommendation in a little more detail. In particular: (a) Why are you “uneasy” about list experiments? What would strengthen your confidence in list experiments? (b) What do you mean by “each item be removed”? As you know, there are several non-sensitive items and one sensitive item in a list experiment. Do you mean that the non-sensitive items should be removed one-by-one for the control group or are you suggesting a multiple arm design in which each arm of the experiment has one non-sensitive item removed. What would be achieved by this design? I replied: I’ve always been a bit skeptical about list experiments, partly because I worry that the absolute number of items on the list could itself affect the response. For example, someone might not want to che

4 0.66126311 726 andrew gelman stats-2011-05-22-Handling multiple versions of an outcome variable

Introduction: Jay Ulfelder asks: I have a question for you about what to do in a situation where you have two measures of your dependent variable and no prior reasons to strongly favor one over the other. Here’s what brings this up: I’m working on a project with Michael Ross where we’re modeling transitions to and from democracy in countries worldwide since 1960 to estimate the effects of oil income on the likelihood of those events’ occurrence. We’ve got a TSCS data set, and we’re using a discrete-time event history design, splitting the sample by regime type at the start of each year and then using multilevel logistic regression models with parametric measures of time at risk and random intercepts at the country and region levels. (We’re also checking for the usefulness of random slopes for oil wealth at one or the other level and then including them if they improve a model’s goodness of fit.) All of this is being done in Stata with the gllamm module. Our problem is that we have two plausib

5 0.65120494 2309 andrew gelman stats-2014-04-28-Crowdstorming a dataset

Introduction: Raphael Silberzahn writes: Brian Nosek, Eric Luis Uhlmann, Dan Martin, and I just launched a project through the Open Science Center we think you’ll find interesting. The basic idea is to “Crowdstorm a Dataset”. Multiple independent analysts are recruited to test the same hypothesis on the same data set in whatever manner they see as best. If everyone comes up with the same results, then scientists can speak with one voice. If not, the subjectivity and conditionality of results on analysis strategy is made transparent. For this first project, we are crowdstorming the question of whether soccer referees are more likely to give red cards to dark skin toned players than light skin toned players. The full project description is here . If you’re interested in being one of the crowdstormer analysts, you can register here . All analysts will receive an author credit on the final paper. We would love to have Bayesian analysts represented in the group. Also, please feel free to let

6 0.64701945 906 andrew gelman stats-2011-09-14-Another day, another stats postdoc

7 0.64655727 1807 andrew gelman stats-2013-04-17-Data problems, coding errors…what can be done?

8 0.64457774 272 andrew gelman stats-2010-09-13-Ross Ihaka to R: Drop Dead

9 0.64167649 1933 andrew gelman stats-2013-07-10-Please send all comments to -dev-ripley

10 0.64126253 2296 andrew gelman stats-2014-04-19-Index or indicator variables

11 0.64084554 1703 andrew gelman stats-2013-02-02-Interaction-based feature selection and classification for high-dimensional biological data

12 0.63995016 397 andrew gelman stats-2010-11-06-Multilevel quantile regression

13 0.63977283 2042 andrew gelman stats-2013-09-28-Difficulties of using statistical significance (or lack thereof) to sift through and compare research hypotheses

14 0.63900656 753 andrew gelman stats-2011-06-09-Allowing interaction terms to vary

15 0.63546318 818 andrew gelman stats-2011-07-23-Parallel JAGS RNGs

16 0.63471675 597 andrew gelman stats-2011-03-02-RStudio – new cross-platform IDE for R

17 0.63340575 938 andrew gelman stats-2011-10-03-Comparing prediction errors

18 0.63108921 888 andrew gelman stats-2011-09-03-A psychology researcher asks: Is Anova dead?

19 0.63082302 907 andrew gelman stats-2011-09-14-Reproducibility in Practice

20 0.62486655 1746 andrew gelman stats-2013-03-02-Fishing for cherries


similar blogs computed by lda model

lda for this blog:

topicId topicWeight

[(8, 0.01), (15, 0.021), (16, 0.028), (21, 0.057), (24, 0.163), (30, 0.02), (42, 0.023), (52, 0.011), (54, 0.011), (72, 0.264), (86, 0.043), (90, 0.019), (99, 0.195)]

similar blogs list:

simIndex simValue blogId blogTitle

1 0.95299244 1935 andrew gelman stats-2013-07-12-“A tangle of unexamined emotional impulses and illogical responses”

Introduction: Tyler Cowen posts the following note from a taxi driver: I learned very early on to never drive someone to their destination if it was a route they drove themselves, say to their home from the airport . . . Everyone prides themselves on driving the shortest route but they rarely do. . . . When I first started driving a cab, I drove the shortest route—always, I’m ethical—but people would accuse me of taking the long way because it wasn’t the way they drove . . . In the end, experts they consider themselves to be, people are a tangle of unexamined emotional impulses and illogical responses. I take a lot of rides to and from the airport, and I can assure you that a lot of taxi drivers don’t know the good routes. Once I had to start screaming from the back seat to stop the guy from getting on the BQE. I don’t “pride myself” on knowing a good route home from the airport, but I prefer the good route. I’m guessing that the taxi driver quoted above is subject to the same illusions

2 0.91062295 500 andrew gelman stats-2011-01-03-Bribing statistics

Introduction: I Paid a Bribe by Janaagraha, a Bangalore based not-for-profit, harnesses the collective energy of citizens and asks them to report on the nature, number, pattern, types, location, frequency and values of corruption activities. These reports would be used to argue for improving governance systems and procedures, tightening law enforcement and regulation and thereby reduce the scope for corruption. Here’s a presentation of data from the application: Transparency International could make something like this much more widely available around the world . While awareness is good, follow-up is even better. For example, it’s known that New York’s subway signal inspections were being falsified . Signal inspections are pretty serious stuff, as failures lead to disasters , such as the one in Washington. Nothing much happened after: the person responsible (making $163k a year) was merely reassigned .

3 0.90818948 737 andrew gelman stats-2011-05-30-Memorial Day question

Introduction: When I was a kid they shifted a bunch of holidays to Monday. (Not all the holidays: they kept New Year’s, Christmas, and July 4th on fixed dates, they kept Thanksgiving on a Thursday, and for some reason the shifted Veterans Day didn’t stick. But they successfully moved Washington’s Birthday, Memorial Day, and Columbus Day. It makes sense to give people a 3-day weekend. I have no idea why they picked Monday rather than Friday, but either one would do, I suppose. My question is: if this Monday holiday thing was such a good idea, why did it take them so long to do it?

4 0.90713406 190 andrew gelman stats-2010-08-07-Mister P makes the big jump from the New York Times to the Washington Post

Introduction: See paragraphs 13-15 of this article by Dan Balz.

same-blog 5 0.90676522 268 andrew gelman stats-2010-09-10-Fighting Migraine with Multilevel Modeling

Introduction: Hal Pashler writes: Ed Vul and I are working on something that, although less exciting than the struggle against voodoo correlations in fMRI :-) might interest you and your readers. The background is this: we have been struck for a long time by how many people get frustrated and confused trying to figure out whether something they are doing/eating/etc is triggering something bad, whether it be migraine headaches, children’s tantrums, arthritis pains, or whatever. It seems crazy to try to do such computations in one’s head–and the psychological literature suggests people must be pretty bad at this kind of thing–but what’s the alternative? We are trying to develop one alternative approach–starting with migraine as a pilot project. We created a website that migraine sufferers can sign up for. The users select a list of factors that they think might be triggering their headaches (eg drinking red wine, eating stinky cheese, etc.–the website suggests a big list of candidates drawn

6 0.90376413 741 andrew gelman stats-2011-06-02-At least he didn’t prove a false theorem

7 0.88834679 919 andrew gelman stats-2011-09-21-Least surprising headline of the year

8 0.87758183 1375 andrew gelman stats-2012-06-11-The unitary nature of consciousness: “It’s impossible to be insanely frustrated about 2 things at once”

9 0.86069226 1179 andrew gelman stats-2012-02-21-“Readability” as freedom from the actual sensation of reading

10 0.84793484 84 andrew gelman stats-2010-06-14-Is it 1930?

11 0.84052467 1381 andrew gelman stats-2012-06-16-The Art of Fielding

12 0.83489114 1244 andrew gelman stats-2012-04-03-Meta-analyses of impact evaluations of aid programs

13 0.83195877 727 andrew gelman stats-2011-05-23-My new writing strategy

14 0.83024609 1113 andrew gelman stats-2012-01-11-Toshiro Kageyama on professionalism

15 0.82979441 2331 andrew gelman stats-2014-05-12-On deck this week

16 0.81546366 83 andrew gelman stats-2010-06-13-Silly Sas lays out old-fashioned statistical thinking

17 0.81156254 68 andrew gelman stats-2010-06-03-…pretty soon you’re talking real money.

18 0.80040544 1907 andrew gelman stats-2013-06-20-Amazing retro gnu graphics!

19 0.79772997 2044 andrew gelman stats-2013-09-30-Query from a textbook author – looking for stories to tell to undergrads about significance

20 0.78304291 2335 andrew gelman stats-2014-05-15-Bill Easterly vs. Jeff Sachs: What percentage of the recipients didn’t use the free malaria bed nets in Zambia?