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Table 1

Return to:   Spinal Pain in Danish School Children

Age, sex and type of school for the children participating by study year

Study year 1 (2011–2012) (N = 1015)Study year 2 (2012–2013) (N = 1179)Study year 3 (2013–2014) (N = 1077)
Number of children% girlsNumber of children% girlsNumber of children% girls
Age 85054%
Age 919761%6955%
Age 1021350%23658%6857%
Age 1122450%27151%23359%
Age 1222552%27047%24452%
Age 1310349%21857%22645%
Age 14333%11247%19953%
Age 15333%10648%
Age 1610%
I-school/c-schoola 602/41356%/47%800/51856%/47%767/44055%/48%
aI-school: intervention school, 6 h PE per week

C-school: control school, 2 h PE per week