Childhood National Immunization Coverage Survey (CNICS)

Detailed information for 2015

Status:

Active

Frequency:

Every 2 years

Record number:

5185

The purpose of the Childhood National Immunization Coverage Survey is to collect information on national immunization coverage for childhood vaccines.

Data release - Scheduled for spring 2017

Description

The purpose of the Childhood National Immunization Coverage Survey (CNICS) is to collect information on national immunization coverage for childhood vaccines. The survey is intended to:

- Determine if children are immunized in accordance with recommended immunization schedules for publicly-funded vaccines
- Provide the World Health Organization and the Pan American Health Organization with estimates of national immunization coverage for diphtheria-pertussis-tetanus (DPT) and for measles-mumps-rubella (MMR) and other vaccines for children
- Assess knowledge, attitudes, and awareness of vaccines.

Reference period: Varies

Collection period: From fall to spring

Subjects

  • Children and youth
  • Health

Data sources and methodology

Target population

The target population for this survey is boys and girls aged 2, 7 and 17 years old, and girls aged 13-14 years old on March 1st, 2015, living in the 10 provinces and three territories, not residing on Indian reserves.

Instrument design

The content was developed in coordination with the Public Health Agency (PHAC). The survey content was tested by the Questionnaire Design Research Centre of Statistics Canada in one-on-one interviews in participants' homes prior to collection.

Data collection for the CNICS is comprised of three components. The first component is a computer assisted telephone interview (CATI) during which the parent answers survey questions about their child's immunizations. The completion of the telephone interview triggers the second component, a mail out/mail back Parent Consent form, which is sent to respondents who agreed at the time of the interview to give written consent to Statistics Canada to contact their immunization provider(s). The third component is the Immunization Record Request form, a mail out/mail back questionnaire sent to the child's immunization provider(s) who fills it out with the child's immunization history (name of vaccination and date given). The data provided by the immunization providers are used to enhance the parent reported data.

Sampling

This is a sample survey with a cross-sectional design.

The main objective of the 2015 CNICS is to produce national estimates of coverage for childhood vaccines for boys and girls aged 2, 7 and 17 years old, and girls aged 13-14 years old. The target population is stratified by age and by province and territory to ensure that the sample is representative while remaining efficient. It was determined that a sample of 3,139 units would yield the desired accuracy.

Data sources

Data collection for this reference period: 2015-10-05 to 2016-04-30

Responding to this survey is voluntary.

Data are collected directly from survey respondents.

Data collection for the Childhood National Coverage Survey was comprised of three components. The first component was a computer assisted telephone interview (CATI) during which the parent or guardian (the person most knowledgeable or PMK) answered survey questions about their child's immunizations. The completion of the telephone interview triggered the second component, the mail out/mail back Parent Consent Form, which was sent to respondents who agreed at the time of the interview to give written consent to Statistics Canada to contact their health care provider(s). The third component was the Immunization Record Request Form; a mail out/mail back questionnaire sent to the child's health care
providers) who then filled it out with the child's immunization history (name of vaccination and date given).

Collection for the CATI component of the CNICS took place between October 2015 and January, 2016. Two regional offices, Halifax, and Edmonton conducted the interviews. Two weeks before data collection started, an introductory letter was mailed to the potential PMK of the selected child. The letter informed respondents of the purpose of the voluntary survey and requested they have their child's immunization records available during the interview. Data on immunizations were collected if respondents had an immunization record on hand at the time of the interview. Otherwise, the immunization questions were skipped and respondents were asked about their knowledge, attitudes and beliefs about immunizations.

To maximize response rates, the regional offices used a tracking system for non-response follow-up. In cases where the Parent Consent Form or Immunization Record Request Form was not returned after two weeks of being mailed out, interviewers would make follow-up calls to remind respondents to return the form at the earliest possible convenience.

Error detection

To be provided when data are released.

Imputation

To be provided when data are released.

Estimation

To be provided when data are released.

Quality evaluation

To be provided when data are released.

Disclosure control

Statistics Canada is prohibited by law from releasing any information it collects which could identify any person, business, or organization, unless consent has been given by the respondent or as permitted by the Statistics Act. Various confidentiality rules are applied to all data that are released or published to prevent the publication or disclosure of any information deemed confidential. If necessary, data are suppressed to prevent direct or residual disclosure of identifiable data.

Revisions and seasonal adjustment

To be provided when data are released.

Data accuracy

To be provided when data are released.

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