Table 3 Number (%) of missing values according to country
Variables | Greenland (n = 520) | Ukraine (n = 492) | Poland (n = 91) |
|---|---|---|---|
n (%) | n (%) | n (%) | |
Exposures | |||
Prenatal exposures | 0 (0.0) | 0 (0) | 0 (0) |
Motor skills | |||
DCDQ-score | 306 (59) | 11 (2) | 3 (3) |
Crawling | 114 (22) | 14 (3) | 29 (32) |
Standing | 174 (34) | 7 (1) | 17 (19) |
Walking | 47 (9) | 3 (1) | 3 (3) |
Maternal and child characteristics | |||
Maternal age at baseline | 37 (7) | 25 (5) | 0 (0) |
Parity | 25 (5) | 0 (0) | 0 (0) |
Smoking before pregnancy | 0 (0) | 0 (0) | 0 (0) |
Alcohol before pregnancy | 0 (0) | 0 (0) | 0 (0) |
Maternal educational level | 59 (11) | 59 (12) | 2 (2) |
Child sex | 2 (0) | 3 (1) | 0 (0) |
Breast feeding | 50 (10) | 3 (1) | 0 (0) |
Gestational age at birth | 0 (0) | 0 (0) | 0 (0) |
Child age at follow-up | 52 (10) | 5 (1) | 0 (0) |