Table 3

Effectiveness of ‘Check-In’ on health behaviour measured as continuous outcomes at 12-month follow-up measured as continuous outcomes

Continuous outcomesMedian (IQR2;IQR3)Effectiveness (‘Check-In’ vs usual care)P value
‘Check-In’ group (n=549)Usual care group (n=555)Coef. (95% CI)Median regression*
Cigarettes/day†
 Per protocol, n=23917 (14; 20)15 (10; 20)2 (−4.7 to 8.7)0.35
 ITT; multiple imputation15 (7; 20)15 (7; 20)0 (−2.9 to 2.9)0.99
Drinks/week‡
 Per protocol, n=4197 (4; 19)8 (4; 17)−1 (−2.8 to 0.8)0.38
 ITT; multiple imputation7 (4; 17)7 (4; 15)0 (−1.7 to 1.8)0.95
BMI
 Per protocol, n=68425.9 (23.5; 29.7)26.4 (23.8; 29.6)−0.5 (−1.2 to 0.2)0.19
 ITT; multiple imputation25.9 (23.2; 29.4)26.4 (23.6 :29.8)−0.5 (−1.2 to 0.1)0.11
  • The analyses are performed as per protocol and ITT with multiple imputation.

  • *Median regression estimates the median of the dependent variable.

  • †Among daily smokers.

  • ‡Among those who drink alcohol.

  • BMI, body mass index; ITT, intention to treat.