Table 2 Frequencies and percentages of maternal variables by linkage to the Scottish Maternity Records (SMR 2) and questionnaire response: restricted to women who indicated that they were fecund and for whom linkage to SMR 2 was attempted (excluding deaths before 2000)
Maternal characteristics | Women linked to SMR 2 records and fecund according to questionnaire (N = 2604) | Women linked to SMR 2 records only (N = 1139) | Fecund women in questionnaire only (no linkage found in SMR 2) (N = 609) | Total fecund women from either source (N = 4352) | ||||
|---|---|---|---|---|---|---|---|---|
n | (%) | n | (%) | n | (%) | n | (%) | |
Place of residence in 2003 a | ||||||||
Aberdeen | 2249 | (86) | 898 | (79) | 297 | (49) | 3444 | (79) |
Scotland, not Aberdeen | 263 | (10) | 73 | (6) | 54 | (9) | 390 | (9) |
UK, not Scotland | 66 | (3) | 27 | (2) | 247 | (41) | 340 | (8) |
Emigrated from UK | 6 | (0.2) | 30 | (3) | 1 | (0.2) | 37 | (1) |
Other/dead/not traced | 20 | (1) | 111 | (10) | 10 | (2) | 141 | (3) |
Paternal occupation of woman at her own birth b | ||||||||
Non-manual | 688 | (26) | 197 | (17) | 176 | (29) | 1061 | (24) |
Manual | 1760 | (68) | 819 | (72) | 393 | (65) | 2972 | (68) |
Other/missing | 156 | (6) | 123 | (11) | 40 | (7) | 319 | (7) |
Age at earliest birth (years) | ||||||||
<21 | 705 | (27) | 316 | (28) | 220 | (36) | 1241 | (29) |
21–25 | 988 | (38) | 490 | (43) | 167 | (27) | 1645 | (38) |
26–30 | 630 | (24) | 235 | (21) | 149 | (24) | 1014 | (23) |
31–35 | 194 | (7) | 65 | (6) | 43 | (7) | 302 | (7) |
36–40 | 71 | (3) | 30 | (3) | 20 | (3) | 121 | (3) |
>40 | 16 | (1) | 3 | (3) | 5 | (1) | 24 | (1) |
NK | 0 | (0) | 0 | (0) | 5 | (1) | 5 | (0.1) |
Year of earliest birth | ||||||||
<1971 | 187 | (7) | 69 | (6) | 80 | (13) | 336 | (8) |
1971–1980 | 1852 | (71) | 863 | (76) | 368 | (60) | 3083 | (71) |
1981–1990 | 512 | (20) | 185 | (16) | 143 | (24) | 840 | (19) |
1991–2000 | 53 | (2) | 22 | (2) | 18 | (3) | 93 | (2) |
NK | 0 | (0) | 0 | (0) | 0 | (0) | 0 | (0) |