What do systematic reviews say?

Intervention not reported

The intervention showed no clear difference in number of subjects who had one or more exacerbations over the study… (moderate certainty).

• Tailored interventions based on exhaled nitric oxide versus clinical symptoms for asthma in children and adults 2009 · Cochrane Headline outcomes only
  OR 0.75 [0.55, 1.01]
  3 studies · 782 participants
  Moderate

Intervention not reported

• Tailored interventions based on exhaled nitric oxide versus clinical symptoms for asthma in children and adults 2009 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 197 participants
  Moderate

Intervention not reported

• Tailored interventions based on exhaled nitric oxide versus clinical symptoms for asthma in children and adults 2009 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 546 participants
  Moderate

Intervention not reported

• Tailored interventions based on exhaled nitric oxide versus clinical symptoms for asthma in children and adults 2009 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 197 participants
  Moderate

Intervention not reported

• Tailored interventions based on exhaled nitric oxide versus clinical symptoms for asthma in children and adults 2009 · Cochrane Headline outcomes only
  no estimate extracted
  3 studies · 777 participants
  Low

Intervention not reported

The intervention leads to lower hospital admission/re‐admission (high certainty).

• Education interventions for adults who attend the emergency room for acute asthma 2007 · Cochrane Headline outcomes only
  RR 0.5 [0.27, 0.91]
  5 studies · 572 participants
  High

Intervention not reported

The intervention showed no clear difference in presentation at emergency department (low certainty).

• Education interventions for adults who attend the emergency room for acute asthma 2007 · Cochrane Headline outcomes only
  RR 0.72 [0.47, 1.11]
  8 studies · 946 participants
  Low

Intervention not reported

• Education interventions for adults who attend the emergency room for acute asthma 2007 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 356 participants
  Low