A dataset with developmental scores at the item level for 2139 unique children measured in the years 1991-1996 at ages clustered around six months (n = 128), 12 months (n = 1732) and 18 month (n = 279).
gcdg_chl_1A data.frame with 2139 rows and 113 variables:
| Name | Type | Label |
ctrcd | chr | Country code (ISO 3166-1 alpha-3) |
cohort | chr | Cohort name |
cohortn | chr | Cohort number |
subjid | int | Child number |
agedays | int | Age (days) |
sex | chr | Either "male" or "female" |
gagebrth | int | Gestational age (days) |
by1mdd045 | 0/1 | inspects own hand |
by1mdd046 | 0/1 | Closes on dangling ring (check hand preference) |
by1mdd047 | 0/1 | turns head to sound of bell |
by1mdd048 | 0/1 | turns head to sound of rattle |
by1mdd049 | 0/1 | reaches for cube |
by1mdd050 | 0/1 | manipulates table edge actively |
by1mdd051 | 0/1 | eye-hand coordination in reaching |
by1mdd052 | 0/1 | regards pellet |
by1mdd053 | 0/1 | mirror image approach |
by1mdd054 | 0/1 | picks up cube (check hand preference) |
by1mdd055 | 0/1 | Vocalises attitudes |
by1mdd056 | 0/1 | retains 2 cubes |
by1mdd057 | 0/1 | exploitive paper play |
by1mdd058 | 0/1 | Discriminates strangers |
by1mdd059 | 0/1 | recovers rattle, in crib |
by1mdd060 | 0/1 | reaches persistently |
by1mdd061 | 0/1 | Likes frolic play |
by1mdd062 | 0/1 | turns head after fallen spoon |
by1mdd063 | 0/1 | lifts inverted cup |
by1mdd064 | 0/1 | reaches for second cube |
by1mdd065 | 0/1 | smiles at mirror (5.4 months) |
by1mdd066 | 0/1 | bangs in play |
by1mdd067 | 0/1 | sustained inspection of ring |
by1mdd068 | 0/1 | exploitive string play |
by1mdd069 | 0/1 | transfers objects hand to hand |
by1mdd070 | 0/1 | picks up cube deftly and directly |
by1mdd071 | 0/1 | pulls string: secures ring |
by1mdd072 | 0/1 | interest in sound production |
by1mdd073 | 0/1 | lifts cup with handle |
by1mdd074 | 0/1 | attends to scribbling |
by1mdd075 | 0/1 | looks for fallen spoon |
by1mdd076 | 0/1 | playful response to mirror |
by1mdd077 | 0/1 | retains 2 of 3 cubes offered |
by1mdd078 | 0/1 | manipulates bell: insterest in details |
by1mdd079 | 0/1 | vocalizes 4 different syllables |
by1mdd080 | 0/1 | pulls string adaptively: secures ring |
by1mdd081 | 0/1 | cooperates in games (is this some other scale?) |
by1mdd082 | 0/1 | attempts to secure 3 cubes |
by1mdd083 | 0/1 | rings bell purposely |
by1mdd084 | 0/1 | listens selectively with familiar words |
by1mdd085 | 0/1 | says "da-da" or equivalent |
by1mdd086 | 0/1 | Uncovers toy (check manual if by pulling cloth |
by1mdd087 | 0/1 | fingers holes in pegboard |
by1mdd088 | 0/1 | picks up cup, secures cube |
by1mdd089 | 0/1 | responds to verbal request |
by1mdd090 | 0/1 | puts cube in cup on command |
by1mdd091 | 0/1 | looks for content of box |
by1mdd092 | 0/1 | stirs with spoon in imitation |
by1mdd093 | 0/1 | looks at pictures in book |
by1mdd094 | 0/1 | inhibits on command |
by1mdd095 | 0/1 | attempting to imitate scribble |
by1mdd096 | 0/1 | unwraps cube |
by1mdd097 | 0/1 | repeats performance laughed at |
by1mdd098 | 0/1 | holds crayon adaptively |
by1mdd099 | 0/1 | pushes car along |
by1mdd100 | 0/1 | puts 3 or more cubes in cup |
by1mdd101 | 0/1 | jabbers expressively |
by1mdd102 | 0/1 | uncovers blue box |
by1mdd103 | 0/1 | turns pages of books |
by1mdd104 | 0/1 | Pats toy (whistle doll) in imitation |
by1mdd105 | 0/1 | dangles ring by string |
by1mdd106 | 0/1 | imitates words |
by1mdd107 | 0/1 | puts beads in box (6 of 8) |
by1mdd108 | 0/1 | places 1 peg repeateadly |
by1mdd109 | 0/1 | removes pellet from bottle |
by1mdd110 | 0/1 | blue board: places 1 round block |
by1mdd111 | 0/1 | builds tower of 2 cubes |
by1mdd112 | 0/1 | scribbles sponstaneously |
by1mdd113 | 0/1 | says 2 words |
by1mdd114 | 0/1 | puts 9 cubes in cup |
by1mdd115 | 0/1 | closes round box |
by1mdd116 | 0/1 | uses gestures to make wants known |
by1mdd117 | 0/1 | shows shoes or other clothing, or own toy |
by1mdd118 | 0/1 | pegs placed in 70 seconds |
by1mdd119 | 0/1 | builds tower of 3 cubes |
by1mdd120 | 0/1 | pink board: places round block |
by1mdd121 | 0/1 | blue board: places 2 round blocks |
by1mdd122 | 0/1 | attains toy with stick |
by1mdd123 | 0/1 | pegs placed in 42 seconds |
by1mdd124 | 0/1 | names 1 object |
by1mdd125 | 0/1 | imitates crayon stroke |
by1mdd126 | 0/1 | follows directions doll (check parts passed) |
by1mdd127 | 0/1 | uses words to make wants known |
by1mdd128 | 0/1 | points to parts of doll (check parts recognised, check manua |
by1mdd129 | 0/1 | blue board: places 2 round and 2 square blocks |
by1mdd130 | 0/1 | names 1 picture |
by1mdd131 | 0/1 | finds 2 objects |
by1mdd132 | 0/1 | points to 3 pictures |
by1mdd133 | 0/1 | No label: b1m133 |
by1mdd134 | 0/1 | pegs placed in 30 seconds |
by1mdd135 | 0/1 | differentiates scribble from stroke |
by1mdd136 | 0/1 | sentence of 2 words |
by1mdd137 | 0/1 | pink board: completes |
by1mdd138 | 0/1 | names 2 objects |
by1mdd139 | 0/1 | points to 5 pictures |
by1mdd140 | 0/1 | broken doll: mends approximately |
by1mdd141 | 0/1 | names 3 pictures |
by1mdd142 | 0/1 | blue board: places 6 blocks |
by1mdd143 | 0/1 | builds tower of 6 cubes |
by1mdd144 | 0/1 | discriminates 2: cup, plate, box |
by1mdd145 | 0/1 | names watch, 4th picture |
by1mdd146 | 0/1 | names 3 objects |
by1mdd150 | 0/1 | names watch, 2nd picture |
by1mdd151 | 0/1 | pink board: reverse |
by1mdd152 | 0/1 | discriminates 3: cup, plate, box |
by1mdd153 | 0/1 | broken doll: mends exactly |
Instruments: Bayley I (by1)
Lozoff B, De Andraca I, Castillo M, Smith JB, Walter T, Pino P. Behavioral and developmental effects of preventing iron-deficiency anemia in healthy full-term infants. Pediatrics. 2003;112:846-854. https://pediatrics.aappublications.org/content/112/4/846.short