ControlRuleSets.HealthcareIHI Property

public static ControlRuleSet HealthcareIHI { get; }

Public Shared ReadOnly Property HealthcareIHI As ControlRuleSet
	Get

public:
static property ControlRuleSet^ HealthcareIHI {
	ControlRuleSet^ get ();
}

static member HealthcareIHI : ControlRuleSet with get

Property Value

Evaluates the three most commonly applied IHI rules:

• PointBeyondControlLimits — one point beyond ±3σ (window length 1).
• ConsecutivePointsOnSameSide(Int32) with run length 8 — eight consecutive points on the same side of the center line (window length 8). The IHI convention uses run length 8, shorter than the Nelson standard's run length of 9.
• ConsecutiveIncreasingOrDecreasing(Int32) with run length 6 — six consecutive points continuously increasing or decreasing (window length 6).

Intended for Shewhart run charts and control charts in healthcare quality-improvement contexts following IHI guidance. Not suitable for EWMA or CUSUM charts.

Reference