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Table 3 Coding system

From: Conducting public health surveillance in areas of armed conflict and restricted population access: a qualitative case study of polio surveillance in conflict-affected areas of Borno State, Nigeria

1 Inhibitors 2 Strategies 3 Monitoring systems 4 Collaboration and information sharing systems
1.1 Accessibility of populations 2.1 Community informants 3.1 Tailored surveillance performance indicators (no subcodes were included for this code)
1.2 Communication 2.2 GIS technology 3.2 Tailored surveillance quality assessment tools  
1.3 Health infrastructure 2.3 Collection and testing of specimens beyond AFP cases   
1.4 Overall infrastructure 2.4 Collaboration with security   
1.5 Population movement 2.5 Profiling of displaced people   
1.6 Traumatizing violence 2.6 Evacuation (emerging code)   
1.7 Malnutrition and disease outbreaks 2.7 Nomadic population (emergent code)   
1.8 Rainy season (emergent code)    
1.9 Nomadic population (emergent code)