Table 1 Aid to communicate meaning of margin of error
95% CI for different margins of error (as percentage) | |||||
|---|---|---|---|---|---|
1% | 5% | 10% | 20% | ||
Anticipated proportion (presented as a percentage for ease of understanding) | 5% | 4–6% | 0–10% | NA | NA |
15% | 14–16% | 10–20% | 5–25% | NA | |
25% | 24–26% | 20–30% | 15–35% | NA | |
50% | 49–51% | 45–55% | 40–60% | 30–70% | |