Data are collected at one point in time is known as?

Appeared in: RRB Nsg. Superintendent-20 July 2019 (Shift-1)

Explanation

Involves collecting data from a population or a representative subset at a single, specific point in time.
Often described as a 'snapshot' or 'one-shot' study, it is used to describe the status of phenomena or relationships at a fixed moment.
It is an efficient and economical method for assessing the prevalence of conditions or characteristics within a population.

Option A: This design typically involves manipulating variables and often uses pre-test and post-test measurements, which means data is collected at multiple points in time to assess the effect of an intervention.
Option B: This design involves collecting data from the same subjects repeatedly over an extended period.
Option C: This is a specific type of longitudinal design where data is collected at multiple, regular intervals to observe patterns and trends.

Visual 1: Flowchart - A diagram illustrating the difference in data collection timelines. Cross-sectional shows one data point for a group, while longitudinal shows multiple data points (T1, T2, T3) along a timeline for the same group.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Research designs based on the time frame of data collection as background academic context rather than a clinical decision trigger.
Nurses use cross-sectional studies to understand the prevalence of health issues (e.g., diabetes, hypertension) in their patient populations at a specific time, which helps in planning community health programs and allocating resources.
Understanding different research designs is crucial for evidence-based practice (EBP), allowing nurses to critically appraise studies and determine the validity of their findings for clinical decision-making.
What if? If a researcher wanted to track the long-term effects of a smoking cessation program on a group of patients, they would need to use a longitudinal design, not a cross-sectional one, to measure outcomes at several points over months or years.

How to Approach the Question

First, identify the key phrase in the question: 'at one point in time'.
This phrase is the defining characteristic of a specific research design.
Next, recall the definitions of the different research designs provided in the options.
Longitudinal and time-series research involve multiple data collection points over time.
Experimental research often involves multiple data points (pre/post-test) to measure an intervention's effect.
Match the key phrase 'one point in time' to the definition of cross-sectional research, which captures data at a single moment.

Concept Tested & Keywords

QJ9Kr0GzlJl1MZcRS0SL8w

Practise the full RRB Nsg. Superintendent-20 July 2019 (Shift-1)

Attempt every question from this paper in a timed mock, then review the full solution for each one.