Table 1 The sequential procedure used to determine sample size
From: Restricting the distribution of visual attention reduces cybersickness
Interim N | p value | Action and interpretation |
|---|---|---|
n = 16 | p < .01 | Stop, significant difference |
|  | p > .30 | Stop, no significant difference |
|  | .01 ≤ p ≤ .30 | Continue until n = 24 |
n = 24 | p < .02 | Stop, significant difference |
|  | p > .20 | Stop, no significant difference |
|  | .02 ≤ p ≤ .20 | Continue until n = 32 |
n = 32 | p < .05 | Stop, significant difference |
|  | p ≥ .05 | Stop, no significant difference |