An IERI – International Educational Research Institute Journal
From: Are large surveys of adult literacy skills as comparable over time as we think?
Variables | Total population—full model 1994–2003–2012 | ||
---|---|---|---|
Age-cohort (AC) | Age-period (AP) | Period-cohort (PC) | |
β ln(literacy score) | |||
Age group | |||
25–34 years old (Ref. Cat.) | |||
16–24 years old | 0.049*** [0.008] | 0.034*** [0.008] | – |
35–44 years old | − 0.032** [0.011] | − 0.012 [0.010] | – |
45–54 years old | − 0.073*** [0.015] | − 0.031** [0.011] | – |
55–64 years old | − 0.115*** [0.016] | − 0.059*** [0.013] | – |
Cohort (birth year) | |||
1966–1974 (Ref. Cat.) | |||
1930–1938 | 0.015 [0.060] | – | − 0.132* [0.057] |
1939–1947 | 0.049** [0.014] | – | − 0.062*** [0.015] |
1948–1956 | 0.051** [0.017] | – | − 0.019† [0.010] |
1957–1965 | 0.014† [0.008] | – | − 0.021*** [0.005] |
1975–1983 | − 0.014† [0.008] | – | 0.020** [0.006] |
1984–1992 | − 0.033*** [0.008] | – | 0.040*** [0.007] |
1993+ | − 0.043*** [0.009] | – | 0.066*** [0.010] |
Period (survey year) | |||
2012 (Ref. Cat.) | |||
1994 | – | 0.050*** [0.008] | 0.095*** [0.009] |
2003 | – | 0.037*** [0.004] | 0.058*** [0.004] |
Constant | 5.720*** [0.014] | 5.685*** [0.013] | 5.662*** [0.011] |
Sample size (n) | 41,362 | 41,362 | 41,362 |
Adjusted R2 | 0.392 | 0.395 | 0.399 |