The phrase "as prespecified in the protocol" is correct and usable in written English.
It can be used in contexts where you are referring to something that has been defined or outlined in a formal document or agreement, such as a research protocol or operational guidelines.
Example: "The data collection will proceed as prespecified in the protocol to ensure consistency and reliability in the results."
Alternatives: "as outlined in the protocol" or "as defined in the protocol".
Arteriolar vessels were assessed up to third-generation branches as prespecified in the protocol.
As prespecified in the protocol, each patient could have up to five measurable (and two additional) target or index tophi.
These articles generally do not reflect the exact definition of the study population as prespecified in the protocol.
As prespecified in the protocol, efficacy analysis set included all enrolled subjects, excluding those who had not received administration of the investigational product and had no available primary end point data.
As prespecified in the study protocol, research nurses performing ultrasonography were required to complete a minimum of 10 paired replicate volunteer scans before scanning participants.
As prespecified in the study protocol, we did subgroup analyses of patients who fulfilled the Rome II irritable bowel syndrome diagnostic criteria and of those with constipation predominant irritable bowel syndrome.
The outcome reported here, as prespecified in the original trial protocol, was to compare NVP-R by timing and mode of HIV infection among infants who received SD-NVP or SWEN for prevention of breast-milk HIV transmission.
The study number of 700 cases was prespecified in the protocol as being of sufficient size to enable estimation of uncommon adverse perinatal outcomes (with intrauterine death estimated at 0.5%to3%3%).
Eligibility criteria not prespecified in the protocol but newly mentioned in publications were classified as added.
Primary outcomes were not explicitly prespecified in the protocol; the intent was to evaluate impact on common childhood illnesses including diarrhea, pneumonia, and febrile illness.
This was not prespecified in the protocol.
