Variable breakdown
dob_anon
Section and category
Background.Basic
Description
“Date of birth - Anonymised (day of birth set to 15 for all participants)”
Additional information
| Metadata | |
|---|---|
| contents | DD/MM/YYYY |
| is_mandatory | No |
Data summary
Baseline
| Year_Quarter | freq | pct_valid | pct_tot |
|---|---|---|---|
| 1910.4 | 1 | 0.00 | 0.00 |
| 1914.2 | 1 | 0.00 | 0.00 |
| 1920.3 | 1 | 0.00 | 0.00 |
| 1921.1 | 1 | 0.00 | 0.00 |
| 1921.2 | 2 | 0.00 | 0.00 |
| 1921.3 | 2 | 0.00 | 0.00 |
| 1922.1 | 1 | 0.00 | 0.00 |
| 1922.2 | 1 | 0.00 | 0.00 |
| 1922.3 | 1 | 0.00 | 0.00 |
| 1922.4 | 5 | 0.00 | 0.00 |
| 1923.1 | 4 | 0.00 | 0.00 |
| 1923.2 | 7 | 0.00 | 0.00 |
| 1923.3 | 9 | 0.00 | 0.00 |
| 1923.4 | 4 | 0.00 | 0.00 |
| 1924.1 | 7 | 0.00 | 0.00 |
| 1924.2 | 4 | 0.00 | 0.00 |
| 1924.3 | 4 | 0.00 | 0.00 |
| 1924.4 | 6 | 0.00 | 0.00 |
| 1925.1 | 6 | 0.00 | 0.00 |
| 1925.2 | 7 | 0.00 | 0.00 |
| 1925.3 | 5 | 0.00 | 0.00 |
| 1925.4 | 8 | 0.00 | 0.00 |
| 1926.1 | 8 | 0.00 | 0.00 |
| 1926.2 | 14 | 0.00 | 0.00 |
| 1926.3 | 13 | 0.00 | 0.00 |
| 1926.4 | 13 | 0.00 | 0.00 |
| 1927.1 | 9 | 0.00 | 0.00 |
| 1927.2 | 8 | 0.00 | 0.00 |
| 1927.3 | 16 | 0.00 | 0.00 |
| 1927.4 | 18 | 0.00 | 0.00 |
| 1928.1 | 35 | 0.01 | 0.01 |
| 1928.2 | 31 | 0.01 | 0.01 |
| 1928.3 | 26 | 0.01 | 0.01 |
| 1928.4 | 33 | 0.01 | 0.01 |
| 1929.1 | 47 | 0.01 | 0.01 |
| 1929.2 | 56 | 0.01 | 0.01 |
| 1929.3 | 55 | 0.01 | 0.01 |
| 1929.4 | 67 | 0.01 | 0.01 |
| 1930.1 | 370 | 0.07 | 0.07 |
| 1930.2 | 399 | 0.08 | 0.08 |
| 1930.3 | 460 | 0.09 | 0.09 |
| 1930.4 | 570 | 0.11 | 0.11 |
| 1931.1 | 607 | 0.12 | 0.12 |
| 1931.2 | 579 | 0.11 | 0.11 |
| 1931.3 | 687 | 0.13 | 0.13 |
| 1931.4 | 919 | 0.18 | 0.18 |
| 1932.1 | 936 | 0.18 | 0.18 |
| 1932.2 | 854 | 0.17 | 0.17 |
| 1932.3 | 1012 | 0.20 | 0.20 |
| 1932.4 | 1281 | 0.25 | 0.25 |
| 1933.1 | 1319 | 0.26 | 0.26 |
| 1933.2 | 1277 | 0.25 | 0.25 |
| 1933.3 | 1299 | 0.25 | 0.25 |
| 1933.4 | 1648 | 0.32 | 0.32 |
| 1934.1 | 1400 | 0.27 | 0.27 |
| 1934.2 | 1313 | 0.25 | 0.25 |
| 1934.3 | 1584 | 0.31 | 0.31 |
| 1934.4 | 1843 | 0.36 | 0.36 |
| 1935.1 | 1561 | 0.30 | 0.30 |
| 1935.2 | 1442 | 0.28 | 0.28 |
| 1935.3 | 1703 | 0.33 | 0.33 |
| 1935.4 | 2203 | 0.43 | 0.43 |
| 1936.1 | 1889 | 0.37 | 0.37 |
| 1936.2 | 1669 | 0.32 | 0.32 |
| 1936.3 | 2043 | 0.40 | 0.40 |
| 1936.4 | 2439 | 0.47 | 0.47 |
| 1937.1 | 1947 | 0.38 | 0.38 |
| 1937.2 | 1800 | 0.35 | 0.35 |
| 1937.3 | 2082 | 0.40 | 0.40 |
| 1937.4 | 2563 | 0.50 | 0.50 |
| 1938.1 | 1947 | 0.38 | 0.38 |
| 1938.2 | 1745 | 0.34 | 0.34 |
| 1938.3 | 2330 | 0.45 | 0.45 |
| 1938.4 | 2384 | 0.46 | 0.46 |
| 1939.1 | 1763 | 0.34 | 0.34 |
| 1939.2 | 1594 | 0.31 | 0.31 |
| 1939.3 | 2046 | 0.40 | 0.40 |
| 1939.4 | 2504 | 0.49 | 0.49 |
| 1940.1 | 2087 | 0.40 | 0.40 |
| 1940.2 | 1818 | 0.35 | 0.35 |
| 1940.3 | 2200 | 0.43 | 0.43 |
| 1940.4 | 2702 | 0.52 | 0.52 |
| 1941.1 | 2241 | 0.43 | 0.43 |
| 1941.2 | 2192 | 0.43 | 0.43 |
| 1941.3 | 2339 | 0.45 | 0.45 |
| 1941.4 | 2650 | 0.51 | 0.51 |
| 1942.1 | 2009 | 0.39 | 0.39 |
| 1942.2 | 1999 | 0.39 | 0.39 |
| 1942.3 | 2442 | 0.47 | 0.47 |
| 1942.4 | 2924 | 0.57 | 0.57 |
| 1943.1 | 2107 | 0.41 | 0.41 |
| 1943.2 | 1897 | 0.37 | 0.37 |
| 1943.3 | 2342 | 0.45 | 0.45 |
| 1943.4 | 2633 | 0.51 | 0.51 |
| 1944.1 | 2361 | 0.46 | 0.46 |
| 1944.2 | 2394 | 0.46 | 0.46 |
| 1944.3 | 2687 | 0.52 | 0.52 |
| 1944.4 | 2812 | 0.55 | 0.55 |
| 1945.1 | 2346 | 0.46 | 0.46 |
| 1945.2 | 2378 | 0.46 | 0.46 |
| 1945.3 | 2603 | 0.51 | 0.51 |
| 1945.4 | 3184 | 0.62 | 0.62 |
| 1946.1 | 2726 | 0.53 | 0.53 |
| 1946.2 | 2392 | 0.46 | 0.46 |
| 1946.3 | 2906 | 0.56 | 0.56 |
| 1946.4 | 3423 | 0.66 | 0.66 |
| 1947.1 | 3308 | 0.64 | 0.64 |
| 1947.2 | 2491 | 0.48 | 0.48 |
| 1947.3 | 3342 | 0.65 | 0.65 |
| 1947.4 | 3656 | 0.71 | 0.71 |
| 1948.1 | 3112 | 0.60 | 0.60 |
| 1948.2 | 2803 | 0.54 | 0.54 |
| 1948.3 | 3459 | 0.67 | 0.67 |
| 1948.4 | 3852 | 0.75 | 0.75 |
| 1949.1 | 3501 | 0.68 | 0.68 |
| 1949.2 | 2958 | 0.57 | 0.57 |
| 1949.3 | 4331 | 0.84 | 0.84 |
| 1949.4 | 4476 | 0.87 | 0.87 |
| 1950.1 | 3627 | 0.70 | 0.70 |
| 1950.2 | 3104 | 0.60 | 0.60 |
| 1950.3 | 3873 | 0.75 | 0.75 |
| 1950.4 | 4331 | 0.84 | 0.84 |
| 1951.1 | 3686 | 0.72 | 0.72 |
| 1951.2 | 3389 | 0.66 | 0.66 |
| 1951.3 | 4013 | 0.78 | 0.78 |
| 1951.4 | 4734 | 0.92 | 0.92 |
| 1952.1 | 4292 | 0.83 | 0.83 |
| 1952.2 | 4477 | 0.87 | 0.87 |
| 1952.3 | 4651 | 0.90 | 0.90 |
| 1952.4 | 4854 | 0.94 | 0.94 |
| 1953.1 | 3936 | 0.76 | 0.76 |
| 1953.2 | 3859 | 0.75 | 0.75 |
| 1953.3 | 4612 | 0.89 | 0.89 |
| 1953.4 | 5321 | 1.03 | 1.03 |
| 1954.1 | 4429 | 0.86 | 0.86 |
| 1954.2 | 4038 | 0.78 | 0.78 |
| 1954.3 | 4743 | 0.92 | 0.92 |
| 1954.4 | 5362 | 1.04 | 1.04 |
| 1955.1 | 4546 | 0.88 | 0.88 |
| 1955.2 | 3645 | 0.71 | 0.71 |
| 1955.3 | 4277 | 0.83 | 0.83 |
| 1955.4 | 4648 | 0.90 | 0.90 |
| 1956.1 | 3936 | 0.76 | 0.76 |
| 1956.2 | 3605 | 0.70 | 0.70 |
| 1956.3 | 4424 | 0.86 | 0.86 |
| 1956.4 | 4707 | 0.91 | 0.91 |
| 1957.1 | 4134 | 0.80 | 0.80 |
| 1957.2 | 3820 | 0.74 | 0.74 |
| 1957.3 | 5538 | 1.07 | 1.07 |
| 1957.4 | 4412 | 0.86 | 0.86 |
| 1958.1 | 3891 | 0.75 | 0.75 |
| 1958.2 | 3560 | 0.69 | 0.69 |
| 1958.3 | 3776 | 0.73 | 0.73 |
| 1958.4 | 3819 | 0.74 | 0.74 |
| 1959.1 | 2552 | 0.50 | 0.50 |
| 1959.2 | 2475 | 0.48 | 0.48 |
| 1959.3 | 2778 | 0.54 | 0.54 |
| 1959.4 | 3238 | 0.63 | 0.63 |
| 1960.1 | 2985 | 0.58 | 0.58 |
| 1960.2 | 2978 | 0.58 | 0.58 |
| 1960.3 | 2488 | 0.48 | 0.48 |
| 1960.4 | 2234 | 0.43 | 0.43 |
| 1961.1 | 2051 | 0.40 | 0.40 |
| 1961.2 | 2176 | 0.42 | 0.42 |
| 1961.3 | 2143 | 0.42 | 0.42 |
| 1961.4 | 2320 | 0.45 | 0.45 |
| 1962.1 | 3389 | 0.66 | 0.66 |
| 1962.2 | 4267 | 0.83 | 0.83 |
| 1962.3 | 4954 | 0.96 | 0.96 |
| 1962.4 | 5444 | 1.06 | 1.06 |
| 1963.1 | 5276 | 1.02 | 1.02 |
| 1963.2 | 5776 | 1.12 | 1.12 |
| 1963.3 | 5764 | 1.12 | 1.12 |
| 1963.4 | 5276 | 1.02 | 1.02 |
| 1964.1 | 4500 | 0.87 | 0.87 |
| 1964.2 | 3807 | 0.74 | 0.74 |
| 1964.3 | 4413 | 0.86 | 0.86 |
| 1964.4 | 4903 | 0.95 | 0.95 |
| 1965.1 | 4177 | 0.81 | 0.81 |
| 1965.2 | 3633 | 0.70 | 0.70 |
| 1965.3 | 4100 | 0.80 | 0.80 |
| 1965.4 | 4523 | 0.88 | 0.88 |
| 1966.1 | 4269 | 0.83 | 0.83 |
| 1966.2 | 3645 | 0.71 | 0.71 |
| 1966.3 | 3980 | 0.77 | 0.77 |
| 1966.4 | 4045 | 0.78 | 0.78 |
| 1967.1 | 3197 | 0.62 | 0.62 |
| 1967.2 | 2947 | 0.57 | 0.57 |
| 1967.3 | 3418 | 0.66 | 0.66 |
| 1967.4 | 3968 | 0.77 | 0.77 |
| 1968.1 | 3773 | 0.73 | 0.73 |
| 1968.2 | 3559 | 0.69 | 0.69 |
| 1968.3 | 4502 | 0.87 | 0.87 |
| 1968.4 | 4483 | 0.87 | 0.87 |
| 1969.1 | 3678 | 0.71 | 0.71 |
| 1969.2 | 3280 | 0.64 | 0.64 |
| 1969.3 | 3344 | 0.65 | 0.65 |
| 1969.4 | 3905 | 0.76 | 0.76 |
| 1970.1 | 2970 | 0.58 | 0.58 |
| 1970.2 | 2724 | 0.53 | 0.53 |
| 1970.3 | 2859 | 0.55 | 0.55 |
| 1970.4 | 3151 | 0.61 | 0.61 |
| 1971.1 | 1939 | 0.38 | 0.38 |
| 1971.2 | 1949 | 0.38 | 0.38 |
| 1971.3 | 1799 | 0.35 | 0.35 |
| 1971.4 | 1925 | 0.37 | 0.37 |
| 1972.1 | 1198 | 0.23 | 0.23 |
| 1972.2 | 1182 | 0.23 | 0.23 |
| 1972.3 | 1134 | 0.22 | 0.22 |
| 1972.4 | 1226 | 0.24 | 0.24 |
| 1973.1 | 560 | 0.11 | 0.11 |
| 1973.2 | 575 | 0.11 | 0.11 |
| 1973.3 | 457 | 0.09 | 0.09 |
| 1973.4 | 492 | 0.10 | 0.10 |
| 1974.1 | 262 | 0.05 | 0.05 |
| 1974.2 | 267 | 0.05 | 0.05 |
| 1974.3 | 222 | 0.04 | 0.04 |
| 1974.4 | 192 | 0.04 | 0.04 |
| 1975.1 | 113 | 0.02 | 0.02 |
| 1975.2 | 106 | 0.02 | 0.02 |
| 1975.3 | 57 | 0.01 | 0.01 |
| 1975.4 | 84 | 0.02 | 0.02 |
| 1976.1 | 61 | 0.01 | 0.01 |
| 1976.2 | 59 | 0.01 | 0.01 |
| 1976.3 | 51 | 0.01 | 0.01 |
| 1976.4 | 51 | 0.01 | 0.01 |
| 1977.1 | 38 | 0.01 | 0.01 |
| 1977.2 | 34 | 0.01 | 0.01 |
| 1977.3 | 38 | 0.01 | 0.01 |
| 1977.4 | 25 | 0.00 | 0.00 |
| 1978.1 | 28 | 0.01 | 0.01 |
| 1978.2 | 26 | 0.01 | 0.01 |
| 1978.3 | 11 | 0.00 | 0.00 |
| 1978.4 | 24 | 0.00 | 0.00 |
| 1979.1 | 15 | 0.00 | 0.00 |
| 1979.2 | 14 | 0.00 | 0.00 |
| 1979.3 | 14 | 0.00 | 0.00 |
| 1979.4 | 13 | 0.00 | 0.00 |
| 1980.1 | 10 | 0.00 | 0.00 |
| 1980.2 | 8 | 0.00 | 0.00 |
| 1980.3 | 3 | 0.00 | 0.00 |
| 1980.4 | 6 | 0.00 | 0.00 |
| 1981.1 | 15 | 0.00 | 0.00 |
| 1981.2 | 13 | 0.00 | 0.00 |
| 1981.3 | 11 | 0.00 | 0.00 |
| 1981.4 | 13 | 0.00 | 0.00 |
| 1982.1 | 7 | 0.00 | 0.00 |
| 1982.2 | 5 | 0.00 | 0.00 |
| 1982.3 | 7 | 0.00 | 0.00 |
| 1982.4 | 8 | 0.00 | 0.00 |
| 1983.1 | 6 | 0.00 | 0.00 |
| 1983.2 | 8 | 0.00 | 0.00 |
| 1983.3 | 8 | 0.00 | 0.00 |
| 1983.4 | 4 | 0.00 | 0.00 |
| 1984.1 | 1 | 0.00 | 0.00 |
| 1984.2 | 1 | 0.00 | 0.00 |
| 1984.3 | 2 | 0.00 | 0.00 |
| 1984.4 | 2 | 0.00 | 0.00 |
| 1985.1 | 1 | 0.00 | 0.00 |
| 1985.2 | 3 | 0.00 | 0.00 |
| 1985.3 | 2 | 0.00 | 0.00 |
| 1985.4 | 1 | 0.00 | 0.00 |
| 1986.1 | 4 | 0.00 | 0.00 |
| 1986.3 | 1 | 0.00 | 0.00 |
| 1986.4 | 2 | 0.00 | 0.00 |
| 1987.1 | 1 | 0.00 | 0.00 |
| 1987.2 | 2 | 0.00 | 0.00 |
| 1987.3 | 1 | 0.00 | 0.00 |
| <NA> | 0 | NA | 0.00 |
Between-survey agreement
No agreement analysis available
International Coordinating Centre, China Kadoorie Biobank (CKB), CTSU, Nuffield Department of Population Health, University of Oxford Old Road Campus, Headington, Oxford, OX3 7LF
Tel: +44 (0)1865 743743 | Fax: +44 (0)1865 743985 | Email: ckbaccess@ndph.ox.ac.uk
Copyright China Kadoorie Biobank (CKB), University of Oxford, (2024)
Page generated: 27-02-2024