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Percentage less than the prescribed fifth and third centile as a function of SSD when using a pooled standard
Percentage less than the fifth and third centiles when pooling as a function of SSD. These probabilities are computed from f=φ(−SSD−1.6449) for the fifth centile and f=φ (−SSD−1.8808) for the third centile, where φ denotes the cumulative normal distribution. SSD=standardised site difference.
