**3. Methods and procedures**

#### **3.1 Selection of the study area**

The study selected the 22nd ward of the *Hazaribagh* area of Dhaka South City followed by purposive sampling, which comprises about 1.07 square kilometers with 19,599 households [5]. The density of the population in the area is 160,316 among the total population of Dhaka is 6,539,704 with 3,741,220 population in Dhaka North City Corporation (DNCC) and 2,798,484 in DSCC (Population Census—2014). The research site is in the former tannery industrial area of *Hazaribagh* thana, just adjacent to the *Hazaribagh* Police Station and *Hazaribagh* bazaar, houses- accommodation, schools and Rickshaw stations, etc. in Dhaka South City of Bangladesh.

### **3.2 In-depth interviews**

The study carried out a total of 20 key informant interviews (KII) as in-depth interviews between December 16, 2021, and January 22, 2022. Before running the interview schedule, the researchers tested three interview guidelines among the informants who lived outside of the research area to demonstrate that the informants find the interview guide understandable and to see if any changes or amendments to the interview guideline are necessary. The study translated the interview guide into the local language, called Bengali, before interviewing so that the informants could easily understand the questions. The study recorded all the interviews by using a tape recorder with the full consent of the participants.

## **3.3 Focus group discussion (FGD)**

In addition, the research conducted four focus group discussions (FGDs) consisting of 30 participants which enabled us to understand the research objectives at a deeper level. The study took support from a note-taker with a tape recorder that facilitated us to carry out the FGD. Most of the FGDs ran for about an hour or a bit more.

### **3.4 Data analysis techniques**

The study analyzed the collected data thematically by sorting out the salient themes and patterns from the narratives of the interviews. Tracing the thematic analysis, the study showed patterns of similarities and differences in data. In the next step, the study segmented, coded and presented the data. The study coded the data followed by the ideas of interpretive and narrative analysis. After transcribing the collected data, the study returned the interview information to the research participants for 'member checks' to establish credibility and reliability.
