Cohort | Annual income (gross or net) | Child age at baseline income assessment | Equivalised (yes or no) | Annual household Income† range and mean (local currency) and $PPP (purchasing power parities) | ||
High–richest (quintile 1) | Middle (quintiles 2–4) | Low—poorest (quintile 5) | ||||
GenR Rotterdam, Netherlands | Net | 5–6 years | No | Range (€ Euro) | ||
>€57 600 (>$PPP49 133) | €24 000–€57 600 ($PPP 20 472–$PPP49 133) | <€24 000 (<$PPP20 472) | ||||
LSAC B Australia | Gross | Birth to 1 year | No | Range (AUD$ Australian dollar) | ||
>$A86 164 ($PPP>65 676) | $A32 240–$A86 216 ($PPP24 544–$PPP65 624) | <$A32 240 ($PPP<24 596) | ||||
Mean (AUD$) | ||||||
$A131 438 ($PPP100 181) | $A55 864 ($PPP42 579) | $A22 014 ($PPP16 779) | ||||
ABIS‡ Southeast Sweden | Net | 1–3 years | No | Range (SEK Swedish Krona) | ||
>SEK346 663 (>$PPP37 845) | SEK235 853–SEK346 650 ($PPP 25 748–$PPP37 844) | <SEK235 850 ($PPP25 749) | ||||
Mean (SEK Swedish Krona) | ||||||
Mean SEK479 928 ($PPP52 394) | Mean SEK290 077 ($PPP31 668) | Mean SEK177 139 ($PPP19 338) | ||||
MCS§ UK | Net | 9 months | Yes (OECD‡‡) | Range (£ pound sterling) | ||
>£23 452 ($PPP>33 265) | £6708–£23 452 ($PPP9515–$PPP33 265) | <£6682 (<$PPP9478) | ||||
Mean (£) | ||||||
£34 008 ($PPP48 238) | £14 783 ($PPP20 969) | £5148 ($PPP7302) | ||||
QLSCD¶ Quebec, Canada | Gross | Before birth (−1 year before maternity leave) | Yes (OECD) | Range ($CAD Canadian dollar) | ||
>$C34 444 ($PPP>28 679) | $C10 769–$C34 285 ($PPP8967–$PPP28 547) | <$C10 714 (<$PPP8921) | ||||
Mean ($CAD Canadian dollar) | ||||||
$C49 321 | $C21 291 | $C6889 | ||||
($PPP41 067) | ($PPP17 727) | ($PPP5736) | ||||
NLSCY** †† Canada | Gross | 0–11 months | No | Range ($CAD Canadian dollar) | ||
>$C80 000 (>$PPP66 225) | $C30 000–$C79 999 ($PPP24 834–$PPP66 224) | <$C30 000 (<$PPP24 834) | ||||
USNLSY USA | Net | 0–2 years | No | Range (US$) | ||
>US$86 065 | US$21 968–US$86 064 | <US$21 967 | ||||
Mean (US$) | ||||||
US$89 369 | US$22 585–US$35 375 | US$10 521 |
*Factual content regarding cohort profiles is similarly provided across all EPOCH Collaborative Group publications.
†Household income grouped into high (5th quintile, richest), middle (2nd–4th quintile), low (1st quintile, poorest).
‡$PPP conversion rate year 2000; kr9.16/US$.
§$PPP conversion rate year 2000; £0.705/US$.
¶Average $PPP conversion rate of 1997; $C1.201/US$.
**Average $PPP conversion rate of 1994 and 1995; $C1.208/US$. Source: https://data.oecd.org/conversion/purchasing-power-parities-ppp.htm.
††NLSCY restricts data release; mean data cannot be released.
‡‡OECD: Modified OECD scales were used for equivalisation.
ABIS, All Babies in Southeast Sweden; EPOCH, Elucidating Pathways Of Child Health inequalities; LSAC, Longitudinal Study of Australian Children B-Cohort; MCS, Millennium Cohort Study; NLSCY, National Longitudinal Survey of Children and Youth; QLSCD, Québec Longitudinal Study of Child Development; USNLSY, US National Longitudinal Survey of Youth, Children and Young Adults.