The phrase "and difficulty to understand" is not correct in standard written English.
It can be used when describing something that is challenging to comprehend, but it needs to be rephrased for clarity.
Example: "The instructions were lengthy and had difficulty to understand." (should be rephrased for correctness).
Alternatives: "and hard to understand" or "and challenging to comprehend."
The major reasons given by respondents for non-satisfaction with the over-all perceived quality of care received in the clinic were; absence of clean latrine and inadequate water supply, receiving incomplete information about ANC, inadequate waiting area and seats, absence of privacy, long waiting time and difficulty to understand the provider.
Absence of clean latrine and inadequate water supply, receiving incomplete information about ANC, inadequate waiting area and seats, absence of privacy, long waiting time and difficulty to understand the provider were among the reasons behind this finding in the present study.
However, the two issues associated with the current gene expression signature markers for prognosis, i.e. the lack of a consensus gene set and the difficulty to understand underlying mechanisms, may prevent them from being widely accepted.
They were satisfied with the presentation and clarity but had difficulty to understand all items in the social activities domains.
It was also described that illiterate persons had great difficulty to understand pictorial label information and safety instructions [6].
This may be an explanation why supervisors had difficulty to understand the assessment form and they had insufficient knowledge of how to successfully supervise students.
However, this also might be a disadvantage because of the difficulty to understand all the provided information and to know what information is objective and trustworthy [ 11, 12].
It is not difficulty to understand the increasing char reactivity (the left part of peak) as the Na concentration increased.
(T109: NT08093) Many readers had difficulty to understand or interpret the numerical content of the cited studies in the informational products and the presented descriptions of risks or ratios.
