Table 1 Mean (SD) of Birth Weight and Gestational age by Social and Demographic Characteristics for births in Newcastle upon Tyne, 1962-1992
Variables | Number of births with birth weight (gestational age) | Mean birth weight (SD) [grams] | Mean gestational age (SD) [weeks] |
|---|---|---|---|
Townsend deprivation score | Â | Â | Â |
1st quintile (most advantaged) | 18,943 (18,708) | 3,363 (533) | 39.4 (5.0) |
2nd quintile | 18,805 (18,510) | 3,305 (564) | 39.4 (6.0) |
3rd quintile | 18,813 (18,408) | 3,271 (563) | 39.4 (6.6) |
4th quintile | 18,820 (18,252) | 3,232 (572) | 39.3 (7.6) |
5th quintile (most disadvantaged) | 18,848 (18,200) | 3,194 (580) | 39.1 (8.9) |
Maternal age (years) | Â | Â | Â |
≤ 19 | 12,417 (11,868) | 3,179 (553) | 39.2 (2.2) |
20-24 | 31,358 (30,519) | 3,249 (552) | 39.4 (2.1) |
25-29 | 29,225 (28,766) | 3,305 (555) | 39.4 (2.0) |
30-34 | 15,534 (15,225) | 3,334 (573) | 39.3 (2.0) |
35-39 | 5,724 (5,608) | 3,289 (639) | 39.1 (2.1) |
≥ 40 | 1,431 (1,384) | 3,246 (655) | 39.0 (2.2) |
Sex | Â | Â | Â |
Male | 49,815 (48,688) | 3,332 (579) | 39.3 (2.1) |
Female | 46,627 (45,554) | 3,210 (545) | 39.3 (2.0) |
Parity | Â | Â | Â |
0 (Primipara) | 42,179 (41,216) | 3,228 (546) | 39.4 (2.1) |
1 | 28,635 (28,033) | 3,324 (549) | 39.3 (1.9) |
2 | 13,674 (13,368) | 3,310 (575) | 39.2 (2.2) |
3 | 5,672 (5,534) | 3,278 (621) | 39.2 (2.2) |
≥ 4 | 6,083 (5,946) | 3,283 (644) | 39.3 (2.3) |