Markov models

Question

Markov models

BlackTom AI · Accepted Answer

When evaluating statements about Markov models, I start by recalling their core characteristics and typical uses.
Option a: 'Are able to accurately estimate long term costs and life years gained/QALYs even when population is heterogeneous.' This is misleading. Markov models can estimate long-term outcomes and costs, but accuracy can be compromised by heterogeneity unless there are proper stratifications or microsimulation, and Markov models often rely on average transition probabilities across the cohort. So, claiming they accurately estimate these outcomes in heterogeneous populations without additional adjustments is an overgeneralization.
Option b: 'Can represent disease processes over time but are better suited for short-term one-off interventions.' This is also problematic. Markov models are indeed used to model disease processes over time, but they are particularly valued for chronic, long-term processes and repeated cycles, not just short-term, one-off interventions. The iterative, cyclical structure is a strength for ongoing transitions, so labeling them as better for short-term events ignores their strength in long-term modeling.
Option c: 'Recurrence is probably the main feature of Markov models' This statement highlights the hallmark of Markov processes: memoryless transitions between states with the possibility of returning to previously visited states across cycles. Recurrence (the ability to move between states over multiple cycles and revisit states) is indeed a central feature underpinning Markov chain modeling. While there are nuances (stationarity, absorbing states, etc.), the recurring nature of transitions is a core defining aspect.
Taken together, options a and b misstate typical strengths or focuses of Markov models, whereas option c correctly emphasizes the recurring, iterative transition structure that characterizes Markov processes.

GBSH0024_25-26 Quiz for week 6

Markov models

查看解析

登录即可查看完整答案

类似问题

In a two state Markov model, 1 - P(Dt|Wt-1) = ?

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

Which of the following statement regarding cost is correct:

Under the assumptions used in cost-volume-profit analysis, as the activity increases:

The CVP and break-even analysis are supported by a range of important assumptions. Which of the following is not an assumption of the CVP:

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单