Historical statistics now connect. Can we simply compare them?
Story summary
Arrange old photographs in order and you have a growth album. But if each picture used a different ruler, you would need another look to measure the change. Long statistical series also need consistent comparisons.
Releases linked to this story
A linked official release date has not yet been confirmed.
The questions below explain what to check in the next available evidence.
Questions for the next release 4
How do classifications and coverage differ between the earlier surveys and the new series?
When to check
When methodology or change summaries are updated- Comparison evidence
- Compare the same items in the official sources linked here with subsequent releases.
- What would change the assessment
- Changes in classification or coverage, or a large price effect on nominal values, can make a long series differ from actual industrial activity. Strengthen the interpretation only when detailed tables and company disclosures match by industry and period.
Follow-up evidence not reviewed · Outcome not assessed
Can revenue, cost, employment and equipment series be reproduced for the same industries and regions?
When to check
When official data are updated- Comparison evidence
- Compare the same items in the official sources linked here with subsequent releases.
- What would change the assessment
- Changes in classification or coverage, or a large price effect on nominal values, can make a long series differ from actual industrial activity. Strengthen the interpretation only when detailed tables and company disclosures match by industry and period.
Follow-up evidence not reviewed · Outcome not assessed
Which official price measures help distinguish nominal industry values from real activity?
When to check
At the next official monthly update- Comparison evidence
- Compare the same items in the official sources linked here with subsequent releases.
- What would change the assessment
- Changes in classification or coverage, or a large price effect on nominal values, can make a long series differ from actual industrial activity. Strengthen the interpretation only when detailed tables and company disclosures match by industry and period.
Follow-up evidence not reviewed · Outcome not assessed
Do industry trends appear in company segment revenue, costs, employment and equipment?
When to check
When companies publish official disclosures- Comparison evidence
- Compare the same items in the official sources linked here with subsequent releases.
- What would change the assessment
- Changes in classification or coverage, or a large price effect on nominal values, can make a long series differ from actual industrial activity. Strengthen the interpretation only when detailed tables and company disclosures match by industry and period.
Follow-up evidence not reviewed · Outcome not assessed