Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
at planned intervals
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "at planned intervals" is correct and usable in written English.
It can be used to describe actions or events that occur at predetermined times or frequencies. Example: "The maintenance checks will be conducted at planned intervals to ensure the equipment remains in optimal condition."
✓ Grammatically correct
Science
News & Media
Formal & Business
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
5 human-written examples
The DMO ordinarily auctions its debt at planned intervals to gilt-edged marketmakers, the 15 banks granted the privilege to buy directly from the DMO and make a market in gilts.
News & Media
Clinical data are collected at planned intervals and clinical events (e.g., acute rejection, hospitalization, death).
Science
Additionally, an Independent Data Monitoring Committee (IDMC) met at planned intervals to review study issues and unblinded safety data.
Science
The typology categorized the commuter migrant as a migrant who regularly and at planned intervals commuted across borders to work [ 16].
Science
Hardware manufactures used to use the term "planned obsolescence" to describe the new product cycle, which use to drive sales of new hardware at planned intervals, say, once a year.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
A time variable will be included as a covariate, since visits will not always be at the planned intervals.
The study was conducted under pragmatic ED conditions so samples for troponin assay were not always collected at the exact planned intervals; however, this is the reality of ED clinical practice.
infusion, followed by a 3-h i.v. infusion of paclitaxel 175 mg m−2 on day 1, repeated for four cycles at a planned interval of 14 days.
Science
In the second sequence, the CS group received three cycles of CMF 600/40/600 by short i.v. infusion at a planned interval of 21 days.
Science
HES glaucoma departments are struggling to review glaucoma patients at their planned interval, as demonstrated by an alert from the National Patient Safety Association, suggesting that patients have come to harm because their glaucoma review appointments were delayed.
For the CS group, the first chemotherapy sequence consisted of a short i.v. infusion of epirubicin 90 mg m−2 and cyclophosphamide 600 mg m−2, repeated for four cycles at a planned interval of 21 days.
Science
Expert writing Tips
Best practice
When using "at planned intervals", ensure the plan itself is well-defined and communicated. Clarity in the planning stage is crucial for effective execution.
Common error
Avoid using "at planned intervals" if the timing is merely estimated or subject to frequent changes. The term implies a firm, pre-established schedule, not a flexible one.
Source & Trust
82%
Authority and reliability
4.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "at planned intervals" functions primarily as an adverbial phrase, modifying a verb or clause to specify the timing or frequency of an action or event. Ludwig confirms its proper usage in various contexts.
Frequent in
Science
43%
News & Media
38%
Wiki
6%
Less common in
Formal & Business
4%
Academia
3%
Reference
3%
Ludwig's WRAP-UP
The phrase "at planned intervals" is a grammatically correct adverbial phrase used to indicate that actions or events occur according to a pre-determined schedule. While not overly common, as indicated by Ludwig, it's versatile enough for use in scientific, news, and general writing contexts. When using the phrase, ensure that the plan itself is clearly defined to avoid ambiguity. Consider alternatives such as "at scheduled times" or "at regular intervals" depending on the specific nuance you wish to convey.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
at scheduled times
Replaces "planned" with "scheduled", emphasizing a pre-set timetable.
at regular intervals
Uses "regular" instead of "planned", highlighting consistent spacing between occurrences.
at predetermined times
Substitutes "planned" with "predetermined", stressing the decision was made in advance.
according to a schedule
Restructures the phrase to emphasize adherence to a specific plan.
at fixed times
Replaces "planned" with "fixed", conveying the idea of immutability of the schedule.
periodically
A single-word adverb that means 'at intervals'.
at set periods
Uses "set periods" to mean defined durations.
on a timed basis
Highlights time as the organizing factor for the action or event.
in accordance with a timeline
Expands the phrase to emphasize the existence and adherence to a defined timeline.
at specific junctures
Uses a more formal register, replacing "intervals" with "junctures" to mean particular points in time.
FAQs
How can I use "at planned intervals" in a sentence?
You can use "at planned intervals" to describe events that happen regularly according to a schedule. For example, "The data is collected "at planned intervals" to monitor the patient's progress."
What are some alternatives to "at planned intervals"?
Some alternatives include "at scheduled times", "at regular intervals", or "at predetermined times", depending on the context.
Is it better to say "at planned intervals" or "at regular intervals"?
Both phrases are grammatically correct, but "at regular intervals" implies consistent timing, while "at planned intervals" emphasizes that the timing was pre-arranged. Choose the phrase that best fits the specific meaning you want to convey.
What's the difference between "at planned intervals" and "periodically"?
"At planned intervals" suggests a structured, pre-set schedule, while the adverb "periodically" simply means something happens from time to time without necessarily implying a specific schedule.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
4.3/5
Expert rating
Real-world application tested