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Seasonal Adjustment - X-12-ARIMA -
RegARIMA models have revised on January 31, 2025. (Since the result of January 2025)
| Series | ARIMA model | Regression variables | Reason for setting | |
|---|---|---|---|---|
| Labour force | Total | (211)(012) | LS2011.3 |
Level change due to the impact of the Great East Japan Earthquake since March 2011 |
| Male | (012)(111) | TL2020.4-2020.6 |
Temporary level change due to the impact of the spread of COVID-19 infection from April 2020 to June 2020 |
|
| Female | (012)(012) | LS2011.3 |
Level change due to the impact of the Great East Japan Earthquake since March 2011 |
|
| Employed persons | Total | (111)(012) | LS2009.3 |
Level change due to the impact of the collapse of the Lehman Brothers since March 2009 |
| Male | (111)(012) | LS2009.3 |
Level change due to the impact of the collapse of the Lehman Brothers since March 2009 |
|
| Female | (012)(012) | LS2009.3 |
Level change due to the impact of the collapse of the Lehman Brothers since March 2009 |
|
| Employee | Total | (212)(012) | LS2009.3 |
Level change due to the impact of the collapse of the Lehman Brothers since March 2009 |
| Male | (012)(111) | LS2009.3 |
Level change due to the impact of the collapse of the Lehman Brothers since March 2009 |
|
| Female | (012)(112) | LS2009.3 |
Level change due to the impact of the collapse of the Lehman Brothers since March 2009 |
|
| Regular employee | Total | (012)(012) | - |
- |
| Male | (012)(012) | - |
- |
|
| Female | (211)(012) | - |
- |
|
| Non-regular employee | Total | (211)(111) | LS2020.4 |
Level change due to the impact of the spread of COVID-19 infection since April 2020 |
| Male | (012)(012) | LS2020.4 |
Level change due to the impact of the spread of COVID-19 infection since April 2020 |
|
| Female | (111)(212) | LS2020.4 |
Level change due to the impact of the spread of COVID-19 infection since April 2020 |
|
| Unemployed persons | Total | (012)(011) | RP2008.10-2009.7 |
Ramp level change due to the impact of the collapse of the Lehman Brothers since autumn 2008 |
| Male | (112)(012) | RP2008.10-2009.7 |
Ramp level change due to the impact of the collapse of the Lehman Brothers since autumn 2008 |
|
| Female | (212)(012) | RP2008.10-2009.3 |
Ramp level change due to the impact of the collapse of the Lehman Brothers since autumn 2008 |
|
| Not in labour force | Total | (012)(212) | LS2011.3 |
Level change due to the impact of the Great East Japan Earthquake since March 2011 |
| Male | (012)(111) | TL2020.4-2020.6 |
Temporary level change due to the impact of the spread of COVID-19 infection from April 2020 to June 2020 |
|
| Female | (012)(012) | LS2011.3 |
Level change due to the impact of the Great East Japan Earthquake since March 2011 |
|
| Unemployment rate | Total | (210)(011) | RP2008.10-2009.7 |
Ramp level change due to the impact of the collapse of the Lehman Brothers since autumn 2008 |
| Male | (112)(012) | RP2008.10-2009.7 RP2020.3-2020.10 |
Ramp level change due to the impact of the collapse of the Lehman Brothers since autumn 2008 |
|
| Female | (012)(012) | RP2008.10-2009.3 |
Ramp level change due to the impact of the collapse of the Lehman Brothers since autumn 2008 |
|
- On the release of January results, the seasonally adjusted data for the most recent 10 years are revised by retroactively computing final seasonal factors using the original data for up to 29 years.
- The lower and upper sigma limits used to downweight extreme irregular values are 9.8 sigma and 9.9 sigma.
- X-12-regARIMA was introduced to 24 series. As in the past, X-11(default) has been applied to series which are not mentioned.(March 2, 2021)
