Table 1. Summary of study site characteristics.

Study Site	Brief description	Number of households selected	Average response rate (2006–2011)
Braamfisherville	post-apartheid, low-cost housing	188	67%
Riverlea	apartheid era, low-cost housing	158	65%
Hospital Hill	an informal settlement on the city periphery	188	58%
Bertrams	old inner-city suburb	132	42%
Hillbrow	densely populated, high-rise inner city area	142	51%