Barrier	Excerpt(s)	CFIR domain and construct
Financial constraints	“The cost of bed-nets was mentioned as a barrier to bed-net ownership as the cost of 5,000 Tanzanian shillings (3 US dollars) for a net was seen as unaffordable” (Beer et al., 2012, p.6) “Financial capability can be seen as an ambivalent factor: people who lack skills and/or commitment are likely to be unable to raise money for treated nets and insecticide sachets. Others living under similar conditions manage to mobilise social and economic resources” (Minja & Obrist, 2005, p.163) “he pointed out that his household needed four nets at a price of $5 each. This was a lot of money for a teacher because government salaries were low” (Minja & Obrist, 2005, p.162) “The questionnaire asked reasons for not sleeping under treated mosquito net (n=188) and slightly less than half of the respondents (93/188) (49.5%) claimed that treated mosquito nets were too expensive” (Nnko et al., 2012, p.5) “The main obstacle to the widespread use of treated nets in Tanzania is not acceptability but affordability.” (Njunwa et al., 1991, p.95) “The retail price of 3000/- for a net is not affordable by most Tanzanians” (Njunwa et al., 1991, p.94) “A number of people said that they did not have enough money to buy nets for the whole family, so they had only bought nets for the adults, not for the children” (Makemba et al., 1995, p.56)	Cost (Intervention Characteristics)
Concerns with government provided nets	“I never use a bed net which was provided freely by the local government office. I heard that it has insecticide which reduces men’s ability in sexual activity. I would rather buy a bed net in the shop than using the government bed nets.’ (Male, FGD participant, peri-urban, income)” (Makungu et al., 2017, p.13)	Knowledge and Beliefs about the intervention (Characteristics of Individuals)
Advanced net sales	“In the first phase of implementation in the Group 1 villages there were both unexpected successes and problems… Trust was a central issue. Many people in the area grow cashew nuts as a cash crop. Their experience with the cashew marketing board had been that they would receive a receipt when they delivered their crop, but that the actual payment was often delayed and less than expected, and occasionally never took place at all. In this context, the issuing of receipts during advance sales prior to the distribution day was not popular, and some doubted whether they would ever see the nets at all. They preferred to pay only if they would receive their net immediately. Furthermore, committee members did not like advance sales, as they felt unsafe keeping large sums of money, and occasionally forgot to write down who had given them money for nets.” (Makemba et al., 1995, p.56)	Executing (Process)
Low frequency net distribution	“Distribution took place on one day at one central location in each village. This was far from ideal from the point of view of the villagers. Some were out of their village on a trip, others were fishing, and others were guarding their crops from birds and wild animals or were harvesting.” (Makemba et al., 1995, p.56)	Executing (Process)
Dispersed nature of houses	“In addition, some committee members did not cover the whole area they had been assigned to cover due to the extremely dispersed nature of some houses.” (Makemba et al., 1995, p.56)	Executing (Process)
Perceived need of bed net	“A final factor contributing to low rates of coverage was the existence of different perceptions regarding who needs a net. Some villagers said that they had been living without nets their whole lives and could not see why they should suddenly be necessary” (Makemba et al., 1995, p.56)	Knowledge and Beliefs about the intervention (Characteristics of Individuals)
Poorly developed private sector	“The relatively poorly developed ITN private sector in Ghana contributed significantly to problems that arose during the pilot. The distributors involved in the voucher scheme and in the formal private sector had limited resources and therefore limited capacity to buy ITNs in bulk” (De Savigny et al., 2012, p.41)	Available Resources (Inner Setting)