**2. Materials and Methods**

The study consisted of two parts: an alternate forms reliability evaluation and a feasibility evaluation. When analyzing the reported needs, data from both the alternate forms evaluation and the feasibility evaluation were used.

#### *2.1. Study Setting*

The Dadaab refugee camp in eastern Kenya has been operative for about 26 years and consists of three smaller camps, Dagahaley, Ifo and Hagadera. In February 2019, the camps hosted about 205,000 refugees [6]. The absolute majority of the Dadaab population are refugees from Somalia, and about 50% of all people living in Dadaab are male. The United Nations High Commissioner for Refugees (UNHCR) is the operational manager of the camps, and all services, such as housing, food, water supply, basic health care and schools, are free for registered refugees [12]. The Hagadera refugee camp houses about 83,940 people, where 50% are male. Hagadera has 10 schools. In a household survey conducted in 2017, 43% of all households reported English as their first language [13]. The Internet is available through a 3G connection (via mobile networks) or by broadband in the 10 schools, one adult literacy centre and one ICT training centre [13]. The study context for this study was the Hagadera refugee camp and the data collection was conducted in February 2019.

#### *2.2. Instrumentation*

The HESPER scale consists of 26 fixed questions covering physical, psychological and social needs [8]. The ratings are made by interviewers in a face-to-face interview with affected persons by asking whether a certain need is perceived as a "serious problem" or not. In addition, the affected person can add other needs if not covered by the original 26 stated needs. After reporting their needs, the affected person is asked to prioritize the three most serious perceived needs. A total sum score can be calculated by adding up the total number of "serious problem" ratings [8].

The HESPER Web is a newly developed web based, self-administrated survey version of the original HESPER scale [11]. The HEPSER Web could be accessed by a web link by a mobile phone, tablet or computer. In addition to the 26 questions regarding certain needs and the prioritizing question in the HESPER Web, study specific feasibility questions were added to the HESPER web survey. These questions were: how long did it take for you to fill in the survey? were the questions easy to understand? what mean did you use for answering the survey? did you experience any technical problems when answering the survey? did you suffer from any harm by filling in the survey? could you answer the survey in privacy? and how did you get the invitation for this survey?
