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Injury prevention attitudes and awareness in New Zealand
1. R Hooper1,
2. C A Coggan1,
1. 1Injury Prevention Research Centre, University of Auckland
2. 2Accident Compensation Corporation, Wellington
1. Correspondence to:  Associate Professor Carolyn Coggan, Injury Prevention Research Centre, University of Auckland, Private Bag 92019, Auckland, New Zealand;  c.coggan{at}auckland.ac.nz

## Abstract

Objectives: This study was designed to obtain New Zealand data on beliefs related to a broad spectrum of injuries and their prevention.

Methods: A cross sectional phone survey was conducted of approximately 400 randomly selected households from each of 13 territorial local authorities across New Zealand, giving a total of 5282. Respondents were asked questions on awareness and attitudes to injury prevention, ownership and use of safety equipment, safety behaviours, and incidence of self reported injury.

Results: 84% agreed with the statement that “Most injuries are preventable” and 91% rated their homes as “very safe” or “reasonably safe”. A high proportion of homes had smoke alarms (81%) and first aid kits (81%), and more than half (56%) had turned down the temperature of their hot water to 55°C or lower. However, less than half of the respondents said that they practised the other safety behaviours. Significant associations were found between the practise of safety behaviours and respondents’ home safety ratings. There was a significant association between home safety ratings and the incidence of injury occurring in all settings (p<0.0001), however there was no discernable association between home safety ratings and injury occurring in the home.

Conclusions: Although this survey found that most respondents believed that injuries are preventable and considered their homes to be safe, the public need to be further encouraged to adopt common safety practices and behaviours in the home.

• knowledge
• attitudes to injury prevention
• self reported injury
• awareness of safety behaviours

## Statistics from Altmetric.com

### Awareness

As shown in table 3, 91.4% rated their homes as either reasonably safe or very safe. Only 0.5% said that their home was very unsafe.

Table 3

Demographic comparison of respondents’ self reported safety ratings of their home

The distribution of home safety ratings differed significantly by gender (p<0.0001), with females more likely to report that the inside of their home was very safe (table 3). Home safety ratings also differed significantly by age group (p<0.0001), with the percentage of people who rated their home as very safe increasing with increasing age.

Significant differences in the distribution of safety ratings were also observed by ethnicity (p<0.0001), with Pacific peoples least likely to rate their houses as very safe. Safety ratings responses also differed significantly by levels of household income (p<0.0001). Respondents living in households where the annual income was less than \$25 000 were most likely to rate their homes as very safe.

### Safety practices

Table 4 shows that the majority of homes had smoke alarms (80.5%) and first aid kits (80.7%). In addition, more than half (55.7%) of the respondents reported that they had lowered their hot water temperature to 55°C or lower. However, for all the other safety questions only between a third and a half of the respondents reported that the other safety features were present.

Table 4

Comparison of home safety ratings with safety features in the respondents’ homes: percentages saying “yes”; values are number (%, 99.9% CI)*

The self reported home safety ratings were compared to the safety features that were reported to be present. The results from table 4 show that for all safety items/features (with the exception of stair guards/gates, heater guards, and the lowering of hot water temperature) the test for linear trend was significant, with the proportion of respondents who had the safety feature tending to increase as the safety rating of the home increased from “very unsafe” to “very safe”.

### Comparison of home safety ratings with injury incidence

Overall 41.4% (99.9% CI 39.2% to 43.6%) reported that someone in their household had been treated by a doctor for an injury occurring within the last 12 months. When the injuries were restricted to those occurring in the home only, 15.3% (99.9% CI 13.7% to 16.9%) reported an injury.

Home safety ratings were compared to the incidence of self reported injury. For injuries occurring in the home, there was no significant trend (p=0.08) by home safety rating. However, for injuries occurring at all locations, a significant trend was detected by home safety rating (p<0.0001). As shown by table 5, the incidence of injury increased as the self rating of home safety decreased from “very safe” to “very unsafe”.

Table 5

Incidence of injury by rating of home safety; values are number (%, 99.9% CI)

## DISCUSSION

Our findings indicate that the majority of those interviewed believed that most injuries are preventable. Although this is encouraging for injury prevention professionals and indicates that many of the injury prevention campaigns may be affecting public attitudes, such findings may also hinder future efforts to promote safety. The finding that many people viewed sporting injuries as least preventable provides opportunities to raise awareness among an important target audience. It may be that people are not sufficiently aware of the appropriate safety steps and equipment that can be used to prevent sporting injuries. It could also be a reflection of the strong rugby culture in New Zealand, and the high rates of injury associated with this sport.17

There may be several explanations for the finding that older respondents were less likely to agree that injuries are preventable. It is possible that older people may feel more vulnerable to injury as they grow older and frailer, particularly when compounded with other health problems. There may also be a generational effect, whereby older people have not grown up with the injury prevention messages that younger people have been exposed to in more recent times.18 The finding that respondents in the lowest income bracket were least likely to believe that injuries are preventable may be due to the fact that for low income households, many safety items (such as stair gates and safety glass) are a luxury that they simply cannot afford. These findings may be useful in terms of targeting particular demographic groups for injury prevention initiatives.

It was encouraging to discover that more than 90% of the respondents rated their homes as “very safe” or “reasonably safe”. However, the finding that older respondents were most likely to rate their homes as safe contradicts the earlier finding that older people were less likely to view injuries as being preventable. Similarly, the lower income households were most likely to rate their houses as safe, yet they also believed that injuries were less preventable compared with higher income brackets. These issues require further exploration.

We found that a high proportion of the respondents had smoke alarms and first aid kits, and that just over half had lowered the temperature of their hot water. There have been specific efforts in many parts of New Zealand to address these issues so this is encouraging. However, there is still room for improvement with regard to the other safety features in the home, with less than half of respondents reporting that they had any of the other safety features identified in this study.

Just over 40% of all respondents reported that someone in their household had sustained a medically treated injury in the previous year, and 15% of all respondents reported that a household member had sustained an injury at home. We did not find a significant association between the home safety rating and incidence of injury in the home. There are several possible explanations for this. It is possible that the safety items checklist did not cover some of the more common mechanisms of injuries such as falls, which have a diverse range of causes and account for a significant proportion of all medically treated injuries.19 Moreover, some of the questions we asked relate to relatively rare events, such as fires and electrocution.17 Also injuries recorded as happening at home could have occurred at someone else’s home, thereby affecting the results. A significant association was found between home safety ratings and the incidence of all injuries. This suggests that households that practise safety in the home may have a strong safety culture, and implement safety measures outside of the home or vice versa.

### Limitations

This study had a number of limitations. Firstly, as this was a cross sectional study, no inference can be made about causal relationships between variables. Secondly, as the survey relies on self reported safety practices and safety ratings, there may be issues concerning measurement validity.20,21 Respondents may over-report injury prevention behaviours that are perceived to be desirable, resulting in social desirability bias.22 A study that compared the self reported incidence of seatbelt wearing with observational data found that self reported data overestimated the observed incidence of safety behaviours by up to 5%.23 The validity of constructs reported on in this study may have been strengthened by the fact that respondents in this survey were allowed to choose between a range of ordinal responses (such as “Is your home very safe, reasonably safe, needs improving, very unsafe”), rather than being forced into choosing between two extremes.21 In addition, the significant associations between safety practices and safety ratings would indicate that people were consistent in the manner in which they answered these questions.

Some bias may also have been introduced by the use of a phone survey, as households without a telephone may differ demographically from those with one.24–26 However, only 4.3% of households in the regions sampled reported that they did not have access to a telephone in the 1996 census,27 and comparisons of key sample demographics with census data indicated that the households sampled were representative of the regions surveyed. It should also be recognised that while the questions asked in the survey generally applied to the household, the demographic information applies only to the person answering the survey.

It is also possible that this survey was subject to recall bias. Several other studies have found a decline in recall of injury events when comparing a 12 month recall period to shorter periods, thereby resulting in an underestimate of the annual injury rate.28–30 However, the interviewers read out a list of different injury mechanisms and this may have helped respondents to remember a greater number of injuries. The respondents may also have been less likely to recall less medically serious incidents of injury.26–28 It is also possible that respondents may not have been aware of all injury incidents for their household.

## IMPLICATIONS FOR PREVENTION

One of the major strengths of this study is the survey’s large sample. There have been few other studies in New Zealand that have obtained comprehensive injury related information from such a large and demographically diverse sample. These results provide a useful baseline measurement of attitudes to injury prevention and the practise of safety behaviours that can be further refined internationally or nationally.

The question remains that if the majority of our homes are reportedly “safe”, then why are the rates of injury in New Zealand so high? It could be argued that while people’s ratings of their home safety are accurate in terms of relative comparisons, it would be desirable to raise the proportion of the population who use common safety devices in the home. Further research is also needed into injuries such as falls in the home, to identify potential safety measures that could be promoted by the injury prevention community.

### Key points

• Results for this large study provide a useful baseline measurement of attitudes to injury prevention.

• Respondents considered that injuries in the home were most preventable while sporting injuries were regarded as least preventable.

• A high proportion of homes had smoke alarms and first aid kits.

• There was a significant association between the practice of safety behaviours and respondents’ home safety ratings.

• There was a significant association between home safety ratings and the incidence of injury occurring in all settings.

## Acknowledgments

The Injury Prevention Research Centre wishes to acknowledge the funding support it receives from the Accident Compensation Corporation, the Health Research Council of New Zealand, and the Ministry of Health.

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