The phrase "based on monthly reports" is grammatically correct and commonly used in written English.
It can be used to clarify the source of information or data being referenced in a sentence. Example: "The company's financial projections for the year were based on monthly reports from the accounting department."
Surveillance was based on monthly report cards sent to paediatricians responsible for in- and outpatient care in all hospitals by the NSCK.
We implemented a model of active epidemiological surveillance, with correlation of all factors, including new and old cases, based on monthly data reporting frequency.
In practice, difficulties tracing participants (to advise them to return to clinic for treatment) and inefficient reporting systems (based on monthly lists of results by study number) meant that many participants only received their results after several weeks, which we agreed was unacceptable.
Second, information on smoking status split by gender and age groups for the period 1954 1973 was taken from biannual reports based on monthly telephone surveys, and published by the commercial pollster Nielsen Norway.
The report, which is based on monthly census surveys as recent as May, added to a growing body of studies indicating that the population of illegal immigrants in the United States is dropping significantly.
The new study by Mr. Green and Mr. Coder is based on monthly census surveys, rather than the annual data that appeared in last month's census report on income.
System dynamics simulation modeling combined with statistical analyses were utilized based on monthly time-series datasets.
The alternative strategy based on monthly bulk-milk monitoring therefore was deemed most cost-effective.
HEWs' work is based on monthly plans.
However, a previous study of precipitation and traffic crashes reported a significant positive association based on daily data, in contrast with a significant negative association based on monthly data that the author attributed to lagged effects (Eisenberg 2004).
