Portugal was the first country to implement the WHO SHAPE questionnaire with a nationally representative sample, demonstrating its feasibility with a 30.9% overall response rate, 94% valid responses, and an average completion time of 17.7 minutes.
Key Findings
Methods
The WHO SHAPE questionnaire was successfully implemented in Portugal as the first nationally representative application of this tool worldwide.
The study was conducted between 14th June and 15th October 2023
Sample consisted of 2,010 individuals living in Portugal, aged 18–95 (mean = 49.6 years)
52% of participants were women
Portugal is described as 'the first country to use it with a nationally representative sample'
Results
The overall response rate for the SHAPE questionnaire implementation was 30.9%, with notable differences between online and telephone modalities.
Overall response rate was 30.9%
Online response rate was 79.5%
Telephone response rate was 12.4%
1,426 participants responded online and 584 by telephone
Results
94% of responses collected during the Portugal SHAPE implementation were valid.
94% (also reported as 94.7% in the plain-language summary) of responses were valid
This validity rate was achieved across both online and telephone modes of data collection
The high validity rate was interpreted as reinforcing the quality and feasibility of the tool
Results
The original SHAPE questionnaire took an average of 17.7 minutes to complete, with a difference in completion time between online and telephone formats.
Average completion time for the original SHAPE questionnaire was 17.7 minutes overall
Online completion averaged 16.6 minutes
Telephone completion averaged 20.3 minutes
Including module G (assessing sexual problems), average completion time increased to 29.2 minutes
Results
The SHAPE questionnaire includes an optional Module G specifically designed to assess sexual problems, which substantially increases questionnaire completion time.
Module G assesses sexual problems as an additional component beyond the original questionnaire
Adding Module G increased average completion time from 17.7 minutes to 29.2 minutes, an increase of approximately 11.5 minutes
The modular structure allows flexibility in how comprehensively sexual health is assessed
Background
Most existing population-based sexual health studies are conducted in a limited number of Global North countries using measures that do not allow for cross-country comparison.
The authors identify a gap in global evidence regarding sexual health assessment at a worldwide level
Country-specific measures used in prior studies preclude international comparisons
The WHO developed SHAPE specifically to address this gap by enabling cross-country comparisons of sexual practices and behaviours
What This Means
This research describes the first real-world, nationally representative use of a new World Health Organization (WHO) survey tool called SHAPE (Sexual Health Assessment of Practices and Experiences). Portugal was chosen as the pilot country, and the study involved 2,010 adults aged 18 to 95 who completed the questionnaire either online or by telephone between June and October 2023. The results showed that the tool worked well in practice: nearly 94% of responses were usable, and it took participants an average of only about 18 minutes to complete the core questionnaire, rising to about 29 minutes when an optional module on sexual problems was included.
This research suggests that the SHAPE questionnaire is a practical and feasible way to collect sexual health data from the general population. The relatively short completion time and availability in both online and telephone formats made it accessible to a broad range of people, including older adults. The response rate of about 31% overall — much higher online (nearly 80%) than by telephone (about 12%) — provides useful information for researchers planning future studies using this tool.
The broader significance of this work is that most existing sexual health surveys have been limited to wealthy, Western countries and use different measurement tools that make comparisons between countries difficult or impossible. The SHAPE questionnaire was specifically designed by the WHO to be used globally, and this Portugal study demonstrates it can work in a real-world national context. This research suggests the tool could help build a worldwide evidence base to inform policies and programs aimed at improving sexual health across diverse populations and countries.
Patrão A, Gonsalves L, Brizuela V, Nobre P. (2025). Shaping the WHO Sexual Health Assessment of Practices and Experiences questionnaire: a descriptive study on the real-world example from Portugal.. Sexual and reproductive health matters. https://doi.org/10.1080/26410397.2025.2554458