Data fields
The IMPC uses consistent field names across many of its data cores. The following table provides a summary of the biologically-relevant fields.
| Field name | Description |
| mp_term_id | Identifier of a mammalian phenotype |
| mp_term_name | Name of a mammalian phenotype |
| top_level_mp_term_id | Identifier of a top-level phenotype in the mammalian phenotype ontology |
| top_level_mp_term_name | Name of a top-level phenotype in the mammalian phenotype ontology |
| top_level_mp_term_definition | Definition of a top-level phenotype in the mammalian phenotype ontology |
| top_level_mp_term_synonym | Alternative names of a top-level phenotype in the mammalian phenotype ontology |
| intermediate_mp_term_id | Identifiers of all phenotypes in the mammalian phenotype ontology up to a top-level term |
| intermediate_mp_term_name | Names of all phenotypes in the mammalian phenotype ontology up to a top-level term |
| intermediate_mp_term_definition | Definitions of all phenotypes in the mammalian phenotype ontology up to a top-level term |
| intermediate_mp_term_synonym | Alternative names of phenotypes in the mammalian phenotype ontology up to a top-level term |
| marker_symbol | Mouse gene symbol |
| marker_accession_id | Mouse gene identifier |
| colony_id | Colony identifier |
| allele_name | Name for genotype allele |
| allele_symbol | Allele symbol |
| allele_accession_id | Allele stable identifier |
| strain_accession_id | Identifier for mouse strain |
| genetic_background | Name of mouse strain |
| phenotyping_center | Name of institution where phenotyping was performed |
| project_name | Shortened name of research project under which phenotyping was performed |
| project_fullname | Full name of research project under which phenotyping was performed |
| resource_name | Shortened name of resource for which phenotyping was performed |
| resource_id | Identifier of resource for which phenotyping was performed |
| resource_fullname | Full name of resource for which phenotyping was performed |
| sex | Sex of the mutant specimens |
| zygosity | Zygosity of the mutant specimens |
| pipeline_name | Name of IMPRESS pipeline |
| pipeline_stable_id | Identifier of IMPRESS pipeline |
| pipeline_stable_ke | Key of IMPRESS pipeline |
| procedure_name | Name of phenotyping procedure |
| procedure_stable_id | Identifier of phenotyping procedure |
| procedure_stable_key | Key of phenotyping procedure |
| statistical_method | Name of statistical procedure |
| percentage_change | Measure of effect size for continuous data |
| p_value | P-value from a statistical procedure |
| effect_size | Effect size |
| phenotype_sex | Sex of specimens assigned a phenotype |
| parameter_name | Name of phenotyping parameter |
| parameter_stable_id | Identifier for phenotyping parameter |
| parameter_stable_key | Key for phenotyping parameter |
| control_selection_method | Strategy used to select a control set of animals for a statistical test |
| dependent_variable | Variable tested in a statistical test |
| metadata | Description of conditions under which data was collected |
| metadata_group | Collection of specimens that were tested under the same experimental conditions |
| male_control_count | Number of male specimens in control group |
| male_mutant_count | Number of male specimens in experimental group |
| female_control_count | Number of female specimens in control group |
| female_mutant_count | Number of female specimens in experimental group |
| status | Status code from a statistical analysis |
| additional_information | Any additional information about a calculation |
| raw_output | String or output produced by R during a calculation |
| categories | Categories of data |
| categorical_p_value | P-value from a statistical test using categorical data |
| categorical_effect_size | Maximal percentage change for categorical data |
| batch_significant | Flag if batch is significant or not |
| variance_significant | Flag if variance is significant |
| null_test_p_value | significance of a statistical test |
| genotype_effect_p_value | Significance of genotype effect |
| genotype_effect_stderr_estimate | Estimate of the standard error of genotype effect |
| genotype_effect_parameter_estimate | Effect size estimate of genotype effect |
| sex_effect_p_value | Significance of sex effect |
| sex_effect_stderr_estimate | Estimate of the standard error of sex effect |
| sex_effect_parameter_estimate | Effect size estimate of sex effect |
| weight_effect_p_value | Significance of weight |
| weight_effect_stderr_estimate | Estimate of the standard error of weight effect |
| weight_effect_parameter_estimate | Effect size estimate of weight effect |
| group_1_genotype | Genotype of first group (usually +/+) |
| group_1_residuals_normality_test | Significance that group 1 conforms to normal distribution |
| group_2_genotype | Genotype of second group (usually colony ID) |
| group_2_residuals_normality_test | Significance that group 2 conforms to normal distribution |
| blups_test | Best linear unbiased prediction test |
| rotated_residuals_test | Additional statistical model details; see PhenStat documentation |
| intercept_estimate | Additional statistical model details; see PhenStat documentation |
| intercept_estimate_stderr_estimate | Additional statistical model details; see PhenStat documentation |
| interaction_significant | Flag for signifcance of sex*genotype interaction |
| interaction_effect_p_value | Significance of sex*genotype interaction |
| female_ko_effect_p_value | Significance of the female genotype |
| female_ko_effect_stderr_estimate | Standard error estimate of the female genotype |
| female_ko_parameter_estimate | Effect size of the female genotype |
| male_ko_effect_p_value | Significance of the male genotype |
| male_ko_effect_stderr_estimate | Standard error estimate of the male genotype |
| male_ko_parameter_estimate | Effect size of the male genotype |
| classification_tag | Summary of a statistical test |
| omero_id | Identifier in the OMERO image system |
| download_url | URL of original image (dicom, tiff, or jpeg) |
| jpeg_url | URL of a high-resolution image file |
| gene_accession_id | Identifier of mutated gene |
| gene_symbol | Symbol of mutated gene |
| allele_accession_id | Identifier of mutant allele |
| allele_symbol | Symbol of mutated gene in allele |
| biological_sample_group | Indicator if specific is member of control group or experimental group |
| metadata_group | Tag |
| experiment_source_id | Identifier of experiment at the center that performed it |
| observation_type | Type of experiment, e.g. categorical, unidimensional, multidimensional, time series, metadata |
| date_of_birth | Date the specimen was born |
| date_of_experiment | Date when data was collected |
| weight | Weight of specimen |
| weight_parameter_stable_id | Identifier for weight parameter |
| weight_date | Date when weight was observed |
| weight_days_old | Age of specimen, in days, when weight was observed |
| data_point | Measured value |
| order_index | Indicating order |
| dimension | Indicating dimension |
| time_point | Indicating time when data was measured |
| discrete_point | Indicating the discrete point |
| category | Indicating the category to which specimen has been classified |
| value | Value of metadata |