| BSD_1 | Initials of the child |
| BSD_2 | Researcher's code |
| BSD_3 | Date |
| BSD_4 | Identity of primary caregiver (person being interviewed) (Mother=01, Father=02, Grandmother=03, Grandfather=04, Aunt=05, Uncle=06, Other relative=07, Other non-relative=08) |
| BSD_5 | Cognitive |
| BSD_6 | Receptive Communication |
| BSD_7 | Expressive Communication |
| BSD_8 | Total Score (sum of Receptive and Expressive Communication Scores) |
| BSD_9 | Fine Motor |
| BSD_10 | Gross Motor |
| BSD_11 | Total Score (sum of Fine and Gross Motor Scores) |
| BSD_12 | Social-Emotional |