| Wave 0 (Pre-COVID-19) | Wave 1 | |||
---|---|---|---|---|---|
n = 1296 | n = 397 | ||||
Child age: mean (SD) | 11.0 | (0.4) | Â | 10.8 | (0.5) |
Child gender: N (%) | |||||
 Male | 616 | (48%) |  | 193 | (50%) |
 Female | 680 | (52%) |  | 189 | (49%) |
 Other |  |  |  | 2 | (1%) |
Child z-BMI: mean (SD) | 0.35 | (1.16) | Â | 0.38a | (1.24) |
Parent age: | |||||
 < 35 yrs | 106 | (10%) |  | 37 | (10%) |
 35–39 yrs | 142 | (13%) |  | 79 | (21%) |
 40–44 yrs | 414 | (39%) |  | 136 | (35%) |
 45–49 yrs | 273 | (26%) |  | 94 | (24%) |
 50 + yrs | 128 | (12%) |  | 39 | (10%) |
Parent gender: N (%) | |||||
 Male | 294 | (27%) |  | 91 | (24%) |
 Female | 794 | (73%) |  | 295 | (76%) |
 Other |  |  |  | 1 | (< 1%) |
Parent ethnicity: N (%) | |||||
 White British | 944 | (87%) |  | 305 | (86%) |
 White other | 57 | (5%) |  | 23 | (7%) |
 Black/African/Caribbean/Black British | 16 | (1%) |  | 4 | (1%) |
 Asian/Asian British | 40 | (4%) |  | 16 | (5%) |
 Mixed | 9 | (1%) |  | 4 | (1%) |
 Other | 17 | (2%) |  | 4 | (1%) |
Household educationc: N (%) | |||||
 Up to GCSE/equivalent | 243 | (20%) |  | 43 | (11%) |
 A level/equivalent | 312 | (26%) |  | 93 | (24%) |
 Degree/HND/equivalent | 435 | (37%) |  | 165 | (43%) |
 Higher degree | 201 | (17%) |  | 86 | (22%) |
IMD rankb: median (IQR) | 22,914 | (15,839) | Â | 25,523 | (11,342) |