Table 1

Cross-sectional profile of population at start and end of the study compared with midyear population estimates from the Office for National Statistics

Week 45 (2015)ONS midyear 2015 population estimates for England49 Week 28 (2021)ONS midyear 2020 population estimates for England49
Children included (n)1 094 15012 338 8871 043 96812 699 899
EthnicityWhite—593 032 (54.2%)
Black—35 446 (3.2%)
Asian—78 692 (7.2%)
Other—12 148 (1.1%)
Missing/unclassified—344 307 (31.5%)		White—8 903 313 (78.5%)*
Black—562 333 (5.0%)*
Asian—1 136 293 (10.0%)*
Other—145 004 (1.3%)*
Missing/unclassified—NA*		White—500 162 (47.9%)
Black—34 008 (3.3%)
Asian—71 753 (6.9%)
Other—15 555 (1.5%)
Missing/unclassified—390 766 (37.4%)		NA
IMD quintile1 (most deprived)—233 093 (21.3%)
5 (least deprived)—242 733 (22.2%)		1 (most deprived)—2 962 565 (24.0%)
5 (least deprived)—2 301 477 (18.7%)		1 (most deprived)—226 230 (21.7%)
5 (least deprived)—218 708 (20.9%)		1 (most deprived)—3 018 135 (23.8%)
5 (least deprived)—2 352 108 (18.5%)
Living in urban/rural settingsConurbation—407 092 (37.2%)
Urban—506 868 (46.3%)
Rural—180 173 (16.5%)		Conurbation and urban—10 505 165 (80.8%)†
Rural—2 500 562 (19.2%)†		Conurbation—405 644 (38.9%)
Urban—455 314 (43.6%)
Rural—182 948 (17.5%)		Conurbation—5 835 864 (43.1%)†
Urban—4 948 489 (36.6%)†
Rural—2 994 260 (22.1%)†

  • *From 2011 census for ages 0–17 years.50

  • †From statistical digest of rural England for ages 0–19 years.51

  • IMD, Index of Multiple Deprivation; NA, not applicable; ONS, Office for National Statistics.