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Medical Information Center, Kyushu University Hospital, Fukuoka, Japan
©2020, Korean Society of Epidemiology
This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
CONFLICT OF INTEREST
The author has no conflicts of interest to declare for this study
FUNDING
None.
AUTHOR CONTRIBUTIONS
All work was done by TO.
Models | Degree of freedom | Deviance information criterion |
---|---|---|
Age | 56 | 460.3 |
Period | 60 | 468.0 |
Cohort | 48 | 465.0 |
Age-period | 48 | 438.8 |
Age-cohort | 36 | 435.3 |
Period-cohort | 40 | 461.6 |
Age-period-cohort | 28 | 438.6 |
Variables | Maternal age, yr |
||||||
---|---|---|---|---|---|---|---|
15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | |
No. of births | |||||||
White-collar | |||||||
1995 | 349 | 17,223 | 68,742 | 61,697 | 18,846 | 2,201 | 66 |
2000 | 282 | 14,179 | 69,122 | 66,455 | 24,755 | 3,005 | 81 |
2005 | 201 | 9,280 | 51,992 | 75,780 | 31,073 | 4,412 | 124 |
2010 | 164 | 9,651 | 59,709 | 91,809 | 55,301 | 9,111 | 210 |
2015 | 182 | 9,375 | 68,660 | 114,390 | 74,888 | 17,652 | 445 |
Blue-collar | |||||||
1995 | 230 | 5,185 | 13,048 | 9,471 | 2,754 | 366 | 21 |
2000 | 225 | 3,341 | 9,207 | 7,381 | 2,551 | 378 | 18 |
2005 | 118 | 2,398 | 6,011 | 6,798 | 2,765 | 424 | 15 |
2010 | 130 | 2,737 | 6,543 | 7,410 | 4,268 | 799 | 10 |
2015 | 140 | 2,644 | 7,373 | 8,612 | 5,545 | 1,309 | 23 |
No. of perinatal deaths | |||||||
White-collar | |||||||
1995 | 7 | 159 | 421 | 383 | 172 | 27 | 2 |
2000 | 6 | 104 | 349 | 334 | 135 | 37 | 2 |
2005 | 4 | 55 | 207 | 315 | 142 | 30 | 0 |
2010 | 2 | 52 | 172 | 334 | 226 | 74 | 1 |
2015 | 0 | 33 | 207 | 316 | 254 | 91 | 3 |
Blue-collar | |||||||
1995 | 5 | 45 | 93 | 73 | 26 | 16 | 4 |
2000 | 2 | 18 | 62 | 46 | 20 | 9 | 0 |
2005 | 0 | 11 | 31 | 35 | 11 | 9 | 0 |
2010 | 2 | 9 | 38 | 31 | 39 | 8 | 0 |
2015 | 0 | 6 | 36 | 29 | 31 | 11 | 1 |
Type of worker | Maternal age, yr |
Age-standardized rate | ||||||
---|---|---|---|---|---|---|---|---|
15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | ||
White-collar | ||||||||
1995 | 19.7 | 9.1 | 6.1 | 6.2 | 9.0 | 12.1 | 29.4 | 6.9 |
2000 | 20.8 | 7.3 | 5.0 | 5.0 | 5.4 | 12.2 | 24.1 | 5.4 |
2005 | 19.5 | 5.9 | 4.0 | 4.1 | 4.5 | 6.8 | 0.0 | 4.4 |
2010 | 12.0 | 5.4 | 2.9 | 3.6 | 4.1 | 8.1 | 4.7 | 3.7 |
2015 | 0.0 | 3.5 | 3.0 | 2.8 | 3.4 | 5.1 | 6.7 | 3.0 |
Blue-collar | ||||||||
1995 | 21.3 | 8.6 | 7.1 | 7.6 | 9.4 | 41.9 | 160.0 | 8.3 |
2000 | 8.8 | 5.4 | 6.7 | 6.2 | 7.8 | 23.3 | 0.0 | 6.7 |
2005 | 0.0 | 4.6 | 5.1 | 5.1 | 4.0 | 20.8 | 0.0 | 5.1 |
2010 | 15.2 | 3.3 | 5.8 | 4.2 | 9.1 | 9.9 | 0.0 | 5.4 |
2015 | 0.0 | 2.3 | 4.9 | 3.4 | 5.6 | 8.3 | 41.7 | 4.2 |
Models | Degree of freedom | Deviance information criterion |
---|---|---|
Age | 56 | 460.3 |
Period | 60 | 468.0 |
Cohort | 48 | 465.0 |
Age-period | 48 | 438.8 |
Age-cohort | 36 | 435.3 |
Period-cohort | 40 | 461.6 |
Age-period-cohort | 28 | 438.6 |
Effects | Perinatal mortality rate ratio (95% credible interval) |
|
---|---|---|
White-collar | Blue-collar | |
Maternal age (yr) | ||
15-19 | 3.22 (2.05, 4.95) | 1.36 (0.79, 2.43) |
20-24 | 1.39 (1.20, 1.61) | 0.84 (0.63, 1.09) |
25-29 | 0.77 (0.67, 0.87) | 0.83 (0.65, 1.03) |
30-34 | 0.67 (0.59, 0.76) | 0.64 (0.50, 0.82) |
35-39 | 0.62 (0.55, 0.71) | 0.76 (0.59, 0.97) |
40-44 | 0.85 (0.73, 1.00) | 1.28 (0.98, 1.68) |
45-49 | 0.82 (0.47, 1.32) | 1.69 (0.86, 3.68) |
Maternal birth cohort | ||
1946-1950 | 2.53 (1.39, 5.08) | 4.29 (1.75, 13.52) |
1951-1955 | 2.28 (1.70, 3.05) | 2.90 (1.75, 4.94) |
1956-1960 | 2.16 (1.81, 2.59) | 1.57 (1.12, 2.15) |
1961-1965 | 1.40 (1.21, 1.63) | 1.29 (1.00, 1.66) |
1966-1970 | 1.21 (1.06, 1.38) | 0.95 (0.75, 1.20) |
1971-1975 | 0.99 (0.87, 1.13) | 0.98 (0.79, 1.22) |
1976-1980 | 0.83 (0.73, 0.95) | 0.76 (0.59, 0.96) |
1981-1985 | 0.63 (0.54, 0.73) | 0.66 (0.50, 0.86) |
1986-1990 | 0.60 (0.51, 0.71) | 0.57 (0.41, 0.76) |
1991-1995 | 0.42 (0.31, 0.55) | 0.41 (0.24, 0.66) |
1996-2000 | 0.36 (0.17, 0.64) | 0.36 (0.11, 0.81) |
Variables | Perinatal mortality rate ratio (95% credible interval) |
---|---|
Maternal age (yr) | |
15-19 | 0.59 (0.26, 1.37) |
20-24 | 0.84 (0.62, 1.14) |
25-29 | 1.50 (1.17, 1.94) |
30-34 | 1.34 (1.03, 1.76) |
35-39 | 1.69 (1.28, 2.24) |
40-44 | 2.09 (1.45, 2.97) |
45-49 | 2.87 (1.09, 8.44) |
Maternal birth cohort | |
1946-1950 | 2.36 (0.70, 9.00) |
1951-1955 | 1.77 (0.94, 3.35) |
1956-1960 | 1.01 (0.68, 1.50) |
1961-1965 | 1.28 (0.93, 1.76) |
1966-1970 | 1.10 (0.83, 1.46) |
1971-1975 | 1.38 (1.06, 1.80) |
1976-1980 | 1.27 (0.95, 1.70) |
1981-1985 | 1.47 (1.06, 2.02) |
1986-1990 | 1.31 (0.89, 1.91) |
1991-1995 | 1.36 (0.67, 2.61) |
1996-2000 | 1.38 (0.34, 4.68) |