Data Issues

Waves 1 to 7
Data issues - Waves 1 to 7 – February 2019

29 Difference in health status of household members across waves of LSAC

It is important to note that questions about restrictive health conditions taken from the LSAC Household Form, which asked about every member of the study child's household, are not consistent across waves. Therefore, it cannot be used to examine changes in the health status and restrictive health conditions of household members over time. For example, in Wave 1, the study child's primary carer was asked: 'Does [person] have any medical conditions or disabilities that have lasted, or are likely to last, for six months or more?". The interviewer note stated: 'This refers to physical, psychological and emotional conditions that have lasted or are likely to last for six months or more. Often these conditions need medical treatment or assistance and affect everyday life.' However, in Wave 1, respondents were not asked if these conditions caused any restriction in the household members' everyday activities.

The prompt card provided with this question listed the following conditions:

Sight problems (not corrected by glasses or contact lenses)

Hearing problems

Speech problems

Blackouts, fits or loss of consciousness

Difficulty learning or understanding things

Limited use of arms or fingers

Difficulty gripping things

Limited use of legs or feet

Nervous or emotional conditions that require treatment

Any disfigurement or deformity

Chronic or recurring pain

Any condition that restricts physical activity or physical work (e.g. back problems, migraines)

Shortness of breath or difficulty breathing

Any mental illness for which help or supervision is required

Long-term effects as a result of head injury, stroke or other brain damage

Any other long-term condition such as arthritis, asthma, heart disease, dementia, etc.

Any other long-term condition that requires treatment or medication

From Wave 2 onwards, these questions are separated into two components, the first asking about health conditions or disabilities that have lasted for 12 months and the second asking about conditions that restrict everyday activities.5 The following two questions were asked in relation to each household member:

1. Does [person] have any medical conditions or disabilities that have lasted, or are likely to last, for six months or more?

In Waves 2, 5, 6 and 7, the conditions listed on the prompt card for this question were:

Sight problems (not corrected by glasses or contact lenses)

Hearing problems (where communication is restricted, or an aid to assist with or substitute for hearing is used)

Speech problems

Blackouts, fits or loss of consciousness

Difficulty learning or understanding things

Limited use of arms or fingers

Difficulty gripping things

Limited use of legs or feet

Any condition that restricts physical activity or physical work

Any disfigurement or deformity.

In Waves 3 and 4, the conditions listed on the prompt card for this question were:

Loss of sight (not corrected by glasses or contact lenses)

Loss of hearing (where communication is restricted, or an aid to assist with or substitute for hearing is used)

Speech difficulties

Blackouts, fits or loss of consciousness

Difficulty learning or understanding things

Incomplete use of arms or fingers

Difficulty gripping or holding things

Incomplete use of legs or feet

Restriction in physical activities or doing physical work

Disfigurement or deformity.

2. Still thinking of conditions lasting six months or more, is [person] restricted in everyday activities because of any of the following?

In Waves 2, 5, 6 and 7, the conditions listed on the prompt card for this question were:

Shortness of breath or breathing difficulty

Chronic or recurring pain

A nervous or emotional condition (requiring treatment)

Any mental illness for which help or supervision is required long-term

Long-term effects as a result of a head injury, stroke or other brain damage

Any other long-term condition, such as arthritis, asthma, heart disease, Alzheimer's, dementia, etc.

Any other long-term disease or condition that requires treatment or medication.

In Waves 3 and 4, the conditions listed on the prompt card for this question were:

Shortness of breath or breathing difficulties causing restriction

Chronic or recurring pain or discomfort causing restriction

A nervous or emotional condition causing restriction

Mental illness or condition requiring help or supervision

Long-term effects of head injury, stroke or other brain damage causing restriction

Receiving treatment or medication for any long-term conditions or ailments and still restricted

Any other long-term conditions resulting in a restriction.

The separation of this question into two parts from Wave 2 onwards, and the differences in the wording on the prompt cards between waves have resulted in substantial variation in the percentages of household members reported as having long-term health conditions, disabilities and restrictive health conditions that limit their everyday activities as shown in Tables 41a and 41b.

Table 41a: Any household members (other than the study child) with a disability, K cohort, Waves 1 to 6 (%)
  Age of study child
Age 4-5 
(2004)
Age 6-7 
(2006)
Age 8-9 
(2008)
Age 10-11 
(2010)
Age 12-13 
(2012)
Age 14-15 
(2014)
Household member has a disability 24.7 22.1 18.3 14.4 27.8 27.6
Household member is restricted in everyday activities 37.9 21.2 16.0 12.6 20.9 23.7
Household member has a disability and is restricted in everyday activities 7.9 8.2 6.7 5.4 11.0 12.1
No family member has a disability or restricted in everyday activities 55.7 69.8 75.6 80.4 67.3 65.4
n 4,983 4,464 4,331 4,164 3,956 3,537

Notes: Population weighted results. Columns do not total 100.0 as study child may have more than one household member with a health condition or disability. For Wave 1, measures of disability and restrictive health conditions are calculated by separating the conditions listed in the show cards into two groups, corresponding to those from Wave 2 onwards. (Note: the other option is to remove W1 from the analysis of restrictive health conditions throughout the report.)

Source: LSAC K cohort, Waves 1-6.

Table 41b: Household member (other than the study child) has a disability, K cohort, Waves 1-6 (%)
  Age of study child
  Age 4-5
(2004)
Age 6-7
(2006)
Age 8-9
(2008)
Age 10-11
(2010)
Age 12-13
(2012)
Age 14-15
(2014)
Household member has a disability and is restricted in everyday activities 7.9 8.2 6.7 5.4 11.0 12.1
Mother 4.1 2.8 2.4 0.8 5.1 6.0
Father 2.1 2.3 1.9 2.6 3.0 3.1
Sibling 1.8 2.9 2.0 1.9 2.9 3.2
Grandparent 0.4 0.8 0.8 0.3 1.0 1.1
Other household member - 0.2 0.2 - 0.3 0.4
n 4,983 4,464 4,331 4,164 3,956 3,537

Notes: Population weighted results. Columns do not total 100.0 as study child may have more than one household member with a health condition or disability. For Wave 1, measures of disability and restrictive health conditions are calculated by separating the conditions listed in the show cards into two groups, corresponding to those from Wave 2 onwards. (Note: the other option is to remove W1 from the analysis of restrictive health conditions throughout the report.)

Source: LSAC K cohort, Waves 1-6.

5 Across all waves (including Wave 1), the naming convention and variable labels for these variables is the same. Variables #f17am* to #f17jm* represent medical conditions or disabilities from sight problems/loss of sight to disfigurement or deformity. Variables #f18am* to #f18gm* represent conditions that may restrict everyday activities - ranging from "difficulty breathing" to "other treated condition". (Where # is a wave indicator and * represents household member number).