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R/gcdg_chn.R
In childdevdata: Child Development Data
#' China, 1.4-1.9 years: `gcdg_chn`
#'
#' A dataset with developmental scores at the item level for
#' 990 unique children.
#'
#' Instruments: Bayley III (`by3`)
#'
#' @docType data
#' @format A `data.frame` with 990 rows and 83 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) |
#'|`by3cgd025` |0/1 |Searches for fallen object |
#'|`by3cgd026` |0/1 |Bell Series: Manipulates |
#'|`by3cgd027` |0/1 |Picks Up Block Series: Reaches for second block |
#'|`by3cgd028` |0/1 |Pulls cloth to obtain object |
#'|`by3cgd029` |0/1 |Pulls string adaptively |
#'|`by3cgd030` |0/1 |Retains both blocks |
#'|`by3cgd031` |0/1 |Bell Series: Rings purposely |
#'|`by3cgd032` |0/1 |Looks at pictures |
#'|`by3cgd033` |0/1 |Picks Up Block Series: Retains 2 of 3 blocks |
#'|`by3cgd034` |0/1 |Searches for missing objects |
#'|`by3cgd035` |0/1 |Takes blocks out of cup |
#'|`by3cgd036` |0/1 |Block Series: 1 Block |
#'|`by3cgd037` |0/1 |Picks up Block Series: 3 blocks |
#'|`by3cgd038` |0/1 |Explores holes in pegboard |
#'|`by3cgd039` |0/1 |Pushes car |
#'|`by3cgd040` |0/1 |Finds hidden object |
#'|`by3cgd041` |0/1 |Suspends ring |
#'|`by3cgd042` |0/1 |Removes pellet |
#'|`by3cgd043` |0/1 |Clear Box: Front |
#'|`by3cgd044` |0/1 |Squeezes object |
#'|`by3cgd045` |0/1 |Finds hidden object (Reversed) |
#'|`by3cgd046` |0/1 |Removes lid from bottle |
#'|`by3cgd047` |0/1 |Pegboard Series: 2 holes |
#'|`by3cgd048` |0/1 |Relational Play Series: Self |
#'|`by3cgd049` |0/1 |Pink Board Series: 1 piece |
#'|`by3cgd050` |0/1 |Finds hidden object (Visible Displacement) |
#'|`by3cgd051` |0/1 |Blue Board Series: 1 piece |
#'|`by3cgd052` |0/1 |Clear Box: Sides |
#'|`by3cgd053` |0/1 |Relational Play Series: Others |
#'|`by3cgd054` |0/1 |Block Series: 9 Blocks |
#'|`by3cgd055` |0/1 |Pegboard Series: 6 Pegs |
#'|`by3cgd056` |0/1 |Pink Board Series: Completes |
#'|`by3cgd057` |0/1 |Uses pencil to obtain object |
#'|`by3cgd058` |0/1 |Blue Board Series: 4 Pieces |
#'|`by3cgd059` |0/1 |Attends to story |
#'|`by3cgd060` |0/1 |Rotated pink board |
#'|`by3cgd061` |0/1 |Object assembly (Ball) |
#'|`by3cgd062` |0/1 |Completes Pegboard: 25 Seconds |
#'|`by3cgd063` |0/1 |Object assembly (Ice Cream Cone) |
#'|`by3cgd064` |0/1 |Matches pictures |
#'|`by3cgd065` |0/1 |Representational play |
#'|`by3cgd066` |0/1 |Blue Board Series: Completes (75 seconds) |
#'|`by3cgd067` |0/1 |Imitates a two-step action. |
#'|`by3cgd068` |0/1 |Matches 3 colors |
#'|`by3cgd069` |0/1 |Imaginary play |
#'|`by3cgd070` |0/1 |Understands concept of one |
#'|`by3cgd071` |0/1 |Multischeme combination play |
#'|`by3cgd072` |0/1 |Concept Grouping: colour |
#'|`by3cgd073` |0/1 |Concept Grouping: Size |
#'|`by3fmd019` |0/1 |Transfers ring |
#'|`by3fmd020` |0/1 |Food Pellet Series: Whole hand grasp |
#'|`by3fmd021` |0/1 |Transfers block |
#'|`by3fmd022` |0/1 |Block Series: Thumb-fingertip grasp |
#'|`by3fmd023` |0/1 |Brings spoons or blocks to midline |
#'|`by3fmd024` |0/1 |Food Pellet Series: Partial thumb opposition |
#'|`by3fmd025` |0/1 |Lifts cup by the handle |
#'|`by3fmd026` |0/1 |Food Pellet Series: Thumb-fingertip grasp |
#'|`by3fmd027` |0/1 |Turns pages of books |
#'|`by3fmd028` |0/1 |Grasp series: Palmar grasp |
#'|`by3fmd029` |0/1 |Isolates extended ring finger |
#'|`by3fmd030` |0/1 |Scribbles spontaneously |
#'|`by3fmd031` |0/1 |Block Stacking Series: 2 blocks |
#'|`by3fmd032` |0/1 |Imitates Stroke Series: Random |
#'|`by3fmd033` |0/1 |Places 10 pellets in bottle (60 seconds) |
#'|`by3fmd034` |0/1 |Grasp series: Transitional grasp |
#'|`by3fmd035` |0/1 |Coins in slot |
#'|`by3fmd036` |0/1 |Connecting Blocks: Apart |
#'|`by3fmd037` |0/1 |Grasp Series: Intermediate (Tripod) grasp |
#'|`by3fmd038` |0/1 |Block stacking Series: 6 blocks |
#'|`by3fmd039` |0/1 |Uses hand to hold paper in place |
#'|`by3fmd040` |0/1 |Imitates Strokes Series: Horizontal |
#'|`by3fmd041` |0/1 |Imitates Strokes Series: Vertical |
#'|`by3fmd042` |0/1 |Connecting Blocks: Together |
#'|`by3fmd043` |0/1 |Imitates Strokes Series: Circular |
#'|`by3fmd044` |0/1 |Builds train of blocks |
#'|`by3fmd045` |0/1 |Strings 3 blocks |
#' @references
#' Lozoff B, Jiang Y, Li X, Zhou M, Richards B, Xu G, Clark KM, Liang F,
#' Kaciroti N, Zhao G. Low-dose iron supplementation in infancy modestly
#' increases infant iron status at 9 mo without decreasing growth or increasing
#' illness in a randomized clinical trial in rural China.
#' The Journal of nutrition. 2016;146:612-621.
"gcdg_chn"
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#' China, 1.4-1.9 years: `gcdg_chn`
#'
#' A dataset with developmental scores at the item level for
#' 990 unique children.
#'
#' Instruments: Bayley III (`by3`)
#'
#' @docType data
#' @format A `data.frame` with 990 rows and 83 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) |
#'|`by3cgd025` |0/1 |Searches for fallen object |
#'|`by3cgd026` |0/1 |Bell Series: Manipulates |
#'|`by3cgd027` |0/1 |Picks Up Block Series: Reaches for second block |
#'|`by3cgd028` |0/1 |Pulls cloth to obtain object |
#'|`by3cgd029` |0/1 |Pulls string adaptively |
#'|`by3cgd030` |0/1 |Retains both blocks |
#'|`by3cgd031` |0/1 |Bell Series: Rings purposely |
#'|`by3cgd032` |0/1 |Looks at pictures |
#'|`by3cgd033` |0/1 |Picks Up Block Series: Retains 2 of 3 blocks |
#'|`by3cgd034` |0/1 |Searches for missing objects |
#'|`by3cgd035` |0/1 |Takes blocks out of cup |
#'|`by3cgd036` |0/1 |Block Series: 1 Block |
#'|`by3cgd037` |0/1 |Picks up Block Series: 3 blocks |
#'|`by3cgd038` |0/1 |Explores holes in pegboard |
#'|`by3cgd039` |0/1 |Pushes car |
#'|`by3cgd040` |0/1 |Finds hidden object |
#'|`by3cgd041` |0/1 |Suspends ring |
#'|`by3cgd042` |0/1 |Removes pellet |
#'|`by3cgd043` |0/1 |Clear Box: Front |
#'|`by3cgd044` |0/1 |Squeezes object |
#'|`by3cgd045` |0/1 |Finds hidden object (Reversed) |
#'|`by3cgd046` |0/1 |Removes lid from bottle |
#'|`by3cgd047` |0/1 |Pegboard Series: 2 holes |
#'|`by3cgd048` |0/1 |Relational Play Series: Self |
#'|`by3cgd049` |0/1 |Pink Board Series: 1 piece |
#'|`by3cgd050` |0/1 |Finds hidden object (Visible Displacement) |
#'|`by3cgd051` |0/1 |Blue Board Series: 1 piece |
#'|`by3cgd052` |0/1 |Clear Box: Sides |
#'|`by3cgd053` |0/1 |Relational Play Series: Others |
#'|`by3cgd054` |0/1 |Block Series: 9 Blocks |
#'|`by3cgd055` |0/1 |Pegboard Series: 6 Pegs |
#'|`by3cgd056` |0/1 |Pink Board Series: Completes |
#'|`by3cgd057` |0/1 |Uses pencil to obtain object |
#'|`by3cgd058` |0/1 |Blue Board Series: 4 Pieces |
#'|`by3cgd059` |0/1 |Attends to story |
#'|`by3cgd060` |0/1 |Rotated pink board |
#'|`by3cgd061` |0/1 |Object assembly (Ball) |
#'|`by3cgd062` |0/1 |Completes Pegboard: 25 Seconds |
#'|`by3cgd063` |0/1 |Object assembly (Ice Cream Cone) |
#'|`by3cgd064` |0/1 |Matches pictures |
#'|`by3cgd065` |0/1 |Representational play |
#'|`by3cgd066` |0/1 |Blue Board Series: Completes (75 seconds) |
#'|`by3cgd067` |0/1 |Imitates a two-step action. |
#'|`by3cgd068` |0/1 |Matches 3 colors |
#'|`by3cgd069` |0/1 |Imaginary play |
#'|`by3cgd070` |0/1 |Understands concept of one |
#'|`by3cgd071` |0/1 |Multischeme combination play |
#'|`by3cgd072` |0/1 |Concept Grouping: colour |
#'|`by3cgd073` |0/1 |Concept Grouping: Size |
#'|`by3fmd019` |0/1 |Transfers ring |
#'|`by3fmd020` |0/1 |Food Pellet Series: Whole hand grasp |
#'|`by3fmd021` |0/1 |Transfers block |
#'|`by3fmd022` |0/1 |Block Series: Thumb-fingertip grasp |
#'|`by3fmd023` |0/1 |Brings spoons or blocks to midline |
#'|`by3fmd024` |0/1 |Food Pellet Series: Partial thumb opposition |
#'|`by3fmd025` |0/1 |Lifts cup by the handle |
#'|`by3fmd026` |0/1 |Food Pellet Series: Thumb-fingertip grasp |
#'|`by3fmd027` |0/1 |Turns pages of books |
#'|`by3fmd028` |0/1 |Grasp series: Palmar grasp |
#'|`by3fmd029` |0/1 |Isolates extended ring finger |
#'|`by3fmd030` |0/1 |Scribbles spontaneously |
#'|`by3fmd031` |0/1 |Block Stacking Series: 2 blocks |
#'|`by3fmd032` |0/1 |Imitates Stroke Series: Random |
#'|`by3fmd033` |0/1 |Places 10 pellets in bottle (60 seconds) |
#'|`by3fmd034` |0/1 |Grasp series: Transitional grasp |
#'|`by3fmd035` |0/1 |Coins in slot |
#'|`by3fmd036` |0/1 |Connecting Blocks: Apart |
#'|`by3fmd037` |0/1 |Grasp Series: Intermediate (Tripod) grasp |
#'|`by3fmd038` |0/1 |Block stacking Series: 6 blocks |
#'|`by3fmd039` |0/1 |Uses hand to hold paper in place |
#'|`by3fmd040` |0/1 |Imitates Strokes Series: Horizontal |
#'|`by3fmd041` |0/1 |Imitates Strokes Series: Vertical |
#'|`by3fmd042` |0/1 |Connecting Blocks: Together |
#'|`by3fmd043` |0/1 |Imitates Strokes Series: Circular |
#'|`by3fmd044` |0/1 |Builds train of blocks |
#'|`by3fmd045` |0/1 |Strings 3 blocks |
#' @references
#' Lozoff B, Jiang Y, Li X, Zhou M, Richards B, Xu G, Clark KM, Liang F,
#' Kaciroti N, Zhao G. Low-dose iron supplementation in infancy modestly
#' increases infant iron status at 9 mo without decreasing growth or increasing
#' illness in a randomized clinical trial in rural China.
#' The Journal of nutrition. 2016;146:612-621.
"gcdg_chn"
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