In the present meta-analysis, the effects of this factor were not evaluated successfully because of lack of necessary data in the original studies.
We also have no data on the quality of the roads, and we have not looked at whether there are seasonal changes in the impact of distance, such as might arise from seasonal variations in road quality, due to lack of necessary data to this effect.
Third, due to the small number of eligible studies and the lack of necessary data reported in the original publications, we could not specifically analyse patients with different conditions (e.g., different severities of sepsis or different sites of infection) to distinguish the sepsis, nor could we determine the therapeutic decisions in the individual patient.
Relying so much on air travel is what military planners call a lack of necessary redundancy.
Regrettably, we have no possibility to change the four elements above step by step, due to a lack of the necessary data.
Due to a lack of the data necessary for generation time estimation for Kirtland's Warblers, we used the age of maturity as a proxy for generation time.
This lack of the necessary data of our research has prompted us to present annual estimates of medical visits and diagnostic tests and their cost.
One of the important reasons we did not use a Markov model to calculate CLD costs for Iran was the lack of important necessary data for running a Markov model (e.g. lack of data on age specific mortality rates, etc).
According to these data, this paper proposes two ways of action: a direct way when detailed data are available and an indirect way when there is a lack of data and it is necessary to take into account bibliographic data.
We were unable to calculate the price elasticity of demand at the level of appliance energy consumption due to lack of the necessary data.
Due to a lack of human data, some of the parameters necessary to construct the model were drawn from a range of sources and species.
