1 Background

2 AAPS Trend graph (with proposed benchmark)

Findings:

ap_trend

3 I Chart (individual measure)

Findings:

plt

4 P Chart (proportion chart)

Chart interpretation - Blue points: Quarterly percentage of respondents selecting “Very good” - Solid horizontal line: Average proportion (centre line) - Grey band: Control limits (expected common‑cause variation)

Overall finding: the P chart suggests that patient experience results for “Very good” are stable across NSW and most LHDs during the period. Observed differences between LHDs mainly reflect different stable performance levels, rather than special‑cause variation.

Overall NSW result: The NSW panel shows a highly stable pattern over time. Statewide performance on “Very good” appears predictable quarter‑to‑quarter, with variation consistent with normal statistical fluctuation.

Across LHDs: Most LHDs show stable processes (data points remaining within control limits), but at different performance levels, as reflected by differing centre lines.

p_chart

5 Funnel plot

Findings:

res <- funnel_by_quarter_nsw_centre_exclude_nsw(
  ap_verygood_spc,
  label_mode = "ooc_only",
  max_labels_per_quarter = 12
)

res$plot

#res$flagged