What does NETIMIS stand for?
NETIMIS stands for Network Tools for Intervention Modelling with Intelligent Simulation.
What is NETIMIS?
NETIMIS is a web based tool used to assess performance of point of care test devices in sepsis. NETIMIS will deliver a set of modelling tools for the economic and clinical performance assessment of novel point of care test technologies.
How does NETIMIS work?
NETIMIS is a web resource that can be accessed over the internet from any computer with an internet connection. NETIMIS enables the user to create multiple networks that can be used to model the passage of patients or tokens through a health system e.g. the passage that a patient takes when they arrive at A&E with suspected sepsis.
What is Sepsis?
Sepsis is a common and potentially life-threatening condition triggered by an infection. In sepsis, the body’s immune system goes into overdrive, setting off a series of reactions including widespread inflammation, swelling and blood clotting. This can lead to a significant decrease in blood pressure, which can mean the blood supply to vital organs such as the brain, heart and kidneys is reduced. If not treated quickly, sepsis can eventually lead to multiple organ failure and death.
What kind of information does NETIMIS generate?
NETIMIS generates costs and probabilities of how a population will be treated with regards to sepsis from the statistics that have been gathered previously. Can also potentially generate labour hours around GP and A&E wards.
What are NETIMIS reference sets?
The Reference Sets are predefined pathway settings that can be applied to the pathways the user creates. In these options are the name to assign to the pathway and the cost that is associated with each option. These can be especially useful and time saving. They also help prevent user error with regards to data entry.
What is the NETIMIS patient fields?
The patient field allows the user to define variables to the tokens e.g. Gender, Age. This means that the population of the tokens that can be analysed using the network is more accurate to the real world. The user can assign more than one variable to the network settings making the simulation more realistic.
What does the Time unit field do?
The “Time unit” allows the user to replicate the model according to the time period that it takes for a token that pass through the network.
What is the decision field?
The decision field applies to the start node of the pathway. The data that is entered into the “decision label” is what is the start node is called. The shape option under decision allows the user to change the shape of the start node. The possible shapes available include: Rectangle, Diamond, Parallelogram, Delay and Default. If the user selects any shape then the text is placed inside the shape, if the user selects default then the text is placed outside of the node.
How do I split my results by my variables?
The user is capable of splitting probabilities through the use of variables. There are three options available to the user for defining variables to each pathway: None (Fixed variable), Previous Pathway, Patient Field.
The none (fixed) variable allows the user to filter the tokens based on a sliding scale percentage split between all the pathways that connect to that node. E.g. If 25% of tokens are discharged and 75% are admitted to ward then the user can set the percentages on the scale, when tokens arrive at the node they will be split according to the values assigned to each value.
The previous pathway variable allows the user to assign probabilities dependent on the previous pathway that connects to the node. The user can specify results dependant on if the pathway before the node was “visited” or “not visited” by the token prior to arrival at that node. E.g. If the user arrived at hospital with suspected sepsis and had recently undergone surgery then the percentage that they are admitted to ward increases and the percentage that they are discharged decreases.
The patient field allows you to filter the tokens using the patient fields that are input by the user in the model settings e.g. gender or age. An example would be if a patient is more likely to go down a pathway dependent on their gender would be a variable that the user can assign to the node.
How can I create a loop in NETIMIS?
A loop can be created quite easily by drawing a pathway and selecting the end node and dragging like when initially creating the pathway. Once the node has been into a position the user is satisfied with then the user can connect the pathway to the desired end node.
Can the user move my headings and pathway names?
The user can move the pathway and node labels by selecting the pathway or node label in either add or edit mode. The user can move the labels into a better position. This can enable the user to label the network more efficiently and make the network easier to understand.
Can I edit the position of the nodes?
Yes, using the edit button above the network creation window allows the user to change the location of nodes as well as text. This can mean that the pathways can be edited to improve the network layout after they have been drawn.
Can the user change the colour of the nodes?
At the moment the colour of the nodes cannot be changed.
Can the node names be placed in the nodes?
The node names can be placed in the nodes by selecting a shape option from the decision section of the pathway editor. The shape options available are Rectangle, Diamond, Parallelogram and Delay.
Where is the best place for the user to put my end nodes?
The best place for the end nodes is in a position that is clear and easy to notice. The end nodes of a process are also highlighted by a large red node to make them easier to identify.
Should the user avoid overlapping pathways?
Over lapping pathways can lead to confusion and an unclear and unprofessional looking network. To avoid confusion and create a simpler to understand diagram it is suggested that over lapping pathways are avoided. Instead loop the pathways around each other if there is a need to overlap.
What is the best layout for pathways?
This will require diagrams and statements of how to produce the best looking NETIMIS network.
Why does it take so long for the network to run and produce reports?
The time that the network takes to run is dependent on the size of the model. For larger networks the time that is taken to complete the network is longer than it would be for smaller networks. This is because the tokens have to go through more nodes and pathways till the network is completed and the whole population has been processed. To make the run time of the network faster you could shorten the size of the pathways or you could increase the speed that tokens go through the model by using the scroll bar available at the top of the creation window.