Effectiveness of helmets in skiers and snowboarders: case-control and case crossover study

doi:10.1136/bmj.330.7487.345-c

Correction for Hagel et al., BMJ 330 (7486) 281.

BMJ 2005;330:345 (12 February), doi:10.1136/bmj.330.7487.345-c

Correction

Effectiveness of helmets in skiers and snowboarders: case-control and case crossover study

The wrong lowest recorded temperature mistakenly slipped throughin the electronic version of this paper by Brent E Hagel andcolleagues (BMJ 2005;330:281-3, 5 Feb). The value given in thetext on data collection and in table 3 should have read <-10°C [not $≤$ 10°C]. The version in the printed journalis correct.