Questions tagged [recurrent-events]
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Multiple groups with multiple events of different character
In my team we do a study on a group of patients undergoing abdominal surgery and we evaluate the correlation between frailty amongst patients and complications.
Background knowledge:
We use a frailty-...
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Graphic presentation/analysis of multiple events of different character
Edited;
Ive troede to specify my problem. Hope it makes more sense.
Im a surgeon doing research. I use SPSS for statistics but in the group we are also able to use 'R'.
We are performing af study ...
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Survival curves, counter-intuitive results for customer churn -- lower risk of churn for users who've previously churned? [closed]
I'm trying to work out some explanation for a result I'm seeing where I have the Kaplan-Meier plots for monthly customer churn risk. In aggregate, it looks fine, but I've broken it down into subgroups ...
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Measuring the Impact of Recurring Events
What models can I use to measure the impact of a recurring event? I know that event analysis can gauge the impact of a one-shot event--for example, the impact of an economic policy (which only ...
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Should the proportional hazards assumption be met for cox model with time dependent covariates? What about recurrent event models?
This question has been asked here before but in each thread I found, there was some disagreement about whether the proportional hazards (PH) assumption needs to be met for cox models with time ...
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Why am I getting such different hazard ratios from the Andersen-Gill model compared with the Prentice-Williams-Peterson model?
I am trying to model recurrent composite events to compare differences in recurrent events between two therapy groups. I have completed time to first event Cox regression as well as recurrent event ...
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Understand robust se vs naive se from marginal means survival model [duplicate]
I ran a marginal means survival model that included some time-invariant and time-varying covariates (see this post for relevant information). I am trying to understand why the robust standard errors ...
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Nonlinear effects of time-varying covariates from marginal rates model
This is a followup analysis on this post, inspired by the comments from @EdM. I fitted a marginal rates model (Lin, Wei, Yang, & Ying, 2002) on recurrent event data but don't know how to include ...
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Poisson regression with time dependent covariates
I am an epidemiologist and recently our team receive a data from nursing homes in our city. We have weekly data for each elderly person for about 3 years during their stay in nursing homes. The ...
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Choosing an appropriate model for survival analysis with recurrent events and competing risks
I’m having some difficulties in selecting the appropriate model(s) for analyzing survival data which includes recurrent events and (potentially) competing risks. There is no particular ‘terminal’ ...
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In joint frailty model with competing risks and recurrent events - how to interpret the coefficients?
I took the output from the example described in manual to one of R's packags for frailty modelling. Apart from the statistical package, how to interpret the outcome for recurrent events? Is this HR ...
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In survival analysis, is it OK to standardize length of stay by dividing by length of followup?
I am reviewing an article, so I cannot give a lot of detail, but the study looked at length of stay for patients who had very different amounts of follow up, in a situation where multiple admissions ...
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Modelling/testing for dependence between the *times* at which two sets of events occur
I have a set of events of type 1, and their start and end times. And a set of events of type 2, and their start and end times. I'm struggling to wrap my head around how I can test whether these two ...
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Recurrent event analysis: What approach to choose?
I am trying to examine if the interval between recurrent suicide episodes becomes shorter over the course of repeated incidents. My data is in long format with each participant occupying multiple rows ...
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Predicting repeated binary response from contacts over time
From their initial entry date, people must be contacted each month for three months. It often takes several unsuccessful attempts before you establish contact. Once you reach someone, contact attempts ...
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Find combination of time-dependent values that shows largest anomaly after event
What I have are timeseries of about 500 variables (which are more or less correlated to each other). The variables refer to standardized anomalies (mean=0, std=1). I now define certain event dates in ...
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How to model the likelihood of multiple binary outcomes occurring after an event?
Wanting to know if 3-5 binary outcomes are more likely to occur after an event. For example, are people who experience the event more likely to experience an outcome (within a year or 6 months, etc.) ...
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Independence of events in repeated trials
Just a bit confused about whenever "Independent" event is used in probability/stats videos/books.
When we say an "Independent" event, are we referring to an event standalone or in ...
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Recurrent event data modelling - Cox PH or AFT?
I am attempting to model recurrent event data in Stata. My data is dataset of patient records and I am modelling a patients first delivery of a mobility aid and the subsequent deliveries of new ...
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Confirming the censoring state transition with a multi-state Cox model with recurrent events
I am working with data that contains information about the age at which each person enrolled in a study; zero or more hospitalization events for a disease (with age information); the age at which they ...
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In cases where neural attention is used for machine translation, how they deal with translating sentences that have different lengths?
So attention and transformer models can be used for machine translation.
Sometimes, a sentence in one language might consist of 5 words, but in the target language it consists of 8 words (so for ...
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No observations for specific group - group comparison still possible?
I am conducting a Weibull Survival analysis (recurrent event) with the time-frame between 1970 and 2010. One question is the difference in survival time between gender. However in the earlier years ...
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Would you choose a joint frailty model or a multi-state model for survival analysis with recurrent events and competing risks?
I am going to analyse data with multiple recurring events and additional terminal event. The recurrent events are of the same kind, no hierarchy in them (like in the Prentice-Williams-Petersen). The ...
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Which frailty model is better for survival analysis with recurrent events and competing (teminal) risks: joint or shared?
I am going to analyse data with multiple recurring events and additional terminal event.
The recurrent events are of the same kind, no hierarchy in them (like in the Prentice-Williams-Petersen).
The ...
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Why do we need Fine-Gray, Andersen-Gill, joint fraily and multiple-state model to model complex survival if basic tools (Cox) can handle it?
The basic methods statistical packages, using K-M or Cox regression, are both to handle both recurrent events and competing risks. This setting is very common in medicine, where we have recurring ...
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Right censoring with recurrent events
I am dealing with retrospective survival data covering 60 years. Some people start their first spell in 1960, others start their first spell in 2000 (they are never left truncated). People can ...
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What does it mean for a Markov CHAIN to be recurrent (not just a state)?
There are many resources offering equivalent definitions of recurrence for a state in a Markov Chain - for example, state $x$ is recurrent if, starting in state $x$ you will eventually return to state ...
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How to analyze duration & frequency of different alternating events with generalized linear mixed models?
I have the following data. For each subject, there are observations of different brain states (i.e. brain state A, B, C & D) with varying duration which can also be seen as observations of ...
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Correlation between Migraine Events and Barometric Pressure [closed]
I have historic air pressure line graphs and I have superimposed the dates on which I have suffered migraine attacks. I can see that my migraines are most likely to occur around 3 days after a sharp ...
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Recurrent events analysis software (python)
I am looking for tips for adapting usual survival analysis software to recurrent events analysis, within the framework of the Cox regression. Specifically: whether it is always possible to do? What ...
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Nelson-Aalen estimator for recurrent events
Can one modify the Nelson-Aalen estimator to use for processes with recurrent events, i.e. when more than one identical events are possible for each subject, with known times of the events?
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Can Cox be used to model recurrent events and competing risks at the same time? How?
I have heard that the Cox model can be extended to handle recurrent events and competing risks. But is this possible to analyse data, where both occur? For example two kinds of fractures that can ...
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Survival Analysis for recurrent events
Not my exact setup, but for easier explanation imagine I'm working on a project that looks at user session data on a website (like netflix). The idea is to understand how video playback errors might ...
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(Repeated) Event Model - How to model entry?
I am modeling the entry of 30 firms into 25 industries over time. The unit of analysis are industries.
I have cross-sectional panel data on the industries and know when a firm enters. I have 5 ...
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Probability of an event happening in a given istant
Simplified context: I'm watching traffic over a computer network. I consider "connection" as an event, which obviously can repeat many times during a period of time. I observe my network for ...
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How do I analytically calculate variance of a recursive random variable?
Suppose I have a chest. When you open the chest, there is a 60% chance of getting a prize and a 40% chance of getting 2 more chests. Let $X$ be the number of prizes you get. What is its variance?
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Can a Recurrent Neural Network Detect Evenly Spaced Events?
In order to test the concept, I have created a toy example. I have created training data where each example is a sparse arrays of 0s and 1s. In each array, 1s appear at some regular interval. For ...
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Interpret survival curve for multiple-event Cox proportional hazard model
I am using the bladder2 dataset, which is setup in "conditional" long format:
...
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Time Series/Longitudinal Survival Analysis in R- is this possible?
Wondering if it possible to incorporate time series/longitudinal data into a survival analysis. I have data that represents different cases over a span of 5 years, with the same data gathered during ...
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Specifying a multi-state model with unobservable terminal state
Suppose there is a multi-state process with three states, listed below and labelled as terminal/non-terminal and observable/unobservable:
Initializing: non-terminal observable
Active: non-terminal ...
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Random effects model handling redundancies
I am trying to deal with a time-to-event analysis using repeated binary outcomes. Suppose that time-to-event is measured in days but for the moment we discretize time to weeks. I want to approximate ...
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Test assumption of common baseline - Adersen-Gill Cox regression?
I'm running a Andersen-Gill recurrent (multiple events) cox model and I want to test the assumption of common baseline across events. Is this as simple as entering 'event' into the model and checking ...
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Is it possible to use Survival Analyis on a time series to predict events?
I have a time-series of noisy data which occasionally triggers an event, and once that happens, the noise calms down and the cycle repeats itself (until the event is triggered once again). What I want ...
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How can I change the 'baseline hazard function' from its default?
I have implemented a gap time-conditional (aka PWP) recurrent Cox regression model in R. However, rather then baseline hazard function (delta_0(t)) acting as a constant, I would like to incorporate a ...
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Changing the baseline hazard ratio at each event in a PWP Cox model
I am performing a PWP (conditional) recurrent cox regression analysis over medical records. For each individual, events are indicated by dates in their medical record. It is, therefore very easy to ...
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Survival analysis with recurrent events with subjects that move in and out of risk periods
I would like to model a recurrent event with subjects that move in and out of risk over the course of the observation period of the study.
I have data on the out-of-risk periods (start and end dates) ...
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Intensity function in Poisson random effect model
I have a somewhat general question about intensity functions in Poisson random effect models.
Consider the Poisson random effects model in which conditional on a random effect $u$, an individual ...
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Is this a Diff and Diff kind of problem?
I have a sample of 500 firms and I need to study if an observed variable $y_i$ is different before and after a firm-specific event (happens 4 times in a year).
I have 6 years of data for each firm. ...
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Survival Analysis on recurrent behavior time series predictor
We are trying to build a credit model to predict the default time (or finally closed the loans as censored).
The predictor is a high-dimension time series of current observed previous payment behavior....
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Why does regression model theory not use measure-theoretic sigma-field type notation but counting process models do?
I have been studying counting process theory for time to recurrent event processes and am interested in the explicit use of the conditioning set in the model notation;
$$E[dN(t)|\mathcal{F}_{t^{-}}]=\...
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