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Table 3 Results of PM2.5and quit rate

From: Cost-effectiveness of a complex intervention to reduce children’s exposure to second-hand smoke in the home

  Base-case analysis (with imputed data) Complete case analysis
  Intervention Usual Care Difference (95% CI) P-value Intervention Usual care Difference (95% CI) P-value
No. of households n = 102 n = 102 n = 204   n = 90 n = 82 n = 172  
Cost (SD) £328 (£151) £45 (£20) £283 (£254 to £313) < 0.001 £331 (£149) £46 (£21) £285 (£252 to £318) < 0.001
Reduction in PM2.5 (ug/m3) (SD) 22.1 (65.2) 0.5 (52.0) 21.6 (5.4 to 37.9) 0.0096 24.0 (58.9) 0.9 (52.4) 23.2(6.3 to 40.0) 0.007
Reduction in PM2.5 (10μg/m3) (SD) 2.21 (6.52) 0.05 (5.20) 2.16 (0.54 to 3.79) 0.0096 2.40 (5.89) 0.09 (5.24) 2.32 (0.63 to 4.0) 0.007
ICER (bootstrapped 95% CI) £131 (£72 to £467) £121 (£70 to £471)
No. of households n = 102 n = 102 n = 204   n = 95 n = 93 n = 188  
Cost (SD) £328 (£151) £45 (£20) £283 (£254 to £313) < 0.001 £331 (£148) £44 (£21) £286 (£256 to £317) < 0.001
Quit rate (%)(SD) 8.0% (27.0%) 4.3% (19.6%) 3.7% (−2.8% to 10.2%) 0.2614 8.4% (27.9%) 4.3% (20.4%) 4.1% (−2.9% to 11.2%) 0.248
ICER (bootstrapped 95% CI) £71 (−£57 to £309) £72 (−£22 to £313)