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Effect of the intervention on systolic blood pressure

Five studies and their pooled result: each effect with its confidence interval as a thin line, a square on the effect whose area follows the weight of the study, a diamond for the overall result and a dashed line at no effect. Effect and interval are written beside every span, the weights are in the table. Illustrative meta-analysis, with a phone variant. Build-time warnings: warning[text_truncated] at /valueAxis/title: mobile variant: text was shortened in the visual chart; the full value remains in the specification and HTML data alternative · warning[text_truncated] at /references/0/label: mobile variant: text was shortened in the visual chart; the full value remains in the specification and HTML data alternative

Effect of the intervention on systolic blood pressure

examples/trial-effects.json
{
  "schemaVersion": 1,
  "type": "rangebar",
  "orientation": "horizontal",
  "title": "Effect of the intervention on systolic blood pressure",
  "source": "Illustrative meta-analysis",
  "width": 820,
  "height": 380,
  "showValues": true,
  "valueAxis": {
    "title": "Difference in mmHg (negative favors the intervention)",
    "min": -12,
    "max": 6
  },
  "references": [
    {
      "label": "No effect",
      "value": 0
    }
  ],
  "ranges": [
    {
      "label": "Alvarez 2018 (n=240)",
      "low": -7.8,
      "high": -1.2,
      "mid": -4.5,
      "weight": 24
    },
    {
      "label": "Berg 2019 (n=120)",
      "low": -9.9,
      "high": 1.7,
      "mid": -4.1,
      "weight": 11
    },
    {
      "label": "Chen 2020 (n=410)",
      "low": -5.4,
      "high": -0.2,
      "mid": -2.8,
      "weight": 41
    },
    {
      "label": "Dubois 2021 (n=95)",
      "low": -6.5,
      "high": 4.1,
      "mid": -1.2,
      "weight": 9
    },
    {
      "label": "Evans 2022 (n=180)",
      "low": -8.6,
      "high": -0.4,
      "mid": -4.5,
      "weight": 15
    },
    {
      "label": "Overall (random effects)",
      "low": -4.7,
      "high": -1.9,
      "mid": -3.3,
      "summary": true
    }
  ],
  "mobile": {
    "width": 400,
    "height": 420
  }
}
Effect of the intervention on systolic blood pressure
Effect of the intervention on systolic blood pressureRange chart with 6 categories, each a span from low to high and a central value. Lowest low: −9.9 (Berg 2019 (n=120)). Highest high: 4.1 (Dubois 2021 (n=95)). Overall result, drawn as a diamond: Overall (random effects) (−3.3 (−4.7 to −1.9)). The area of each square follows the weight of its span. Reference lines: No effect at 0.−15−10−50510Difference in mmHg (negative favors the intervention)No effect: 0Alvarez 2018 (n=240): −4.5 (−7.8 to −1.2), weight 24Alvarez 2018 (n=240): −4.5 (−7.8 to −1.2), weight 24−4.5 (−7.8 to −1.2)Alvarez 2018 (n=240)Berg 2019 (n=120): −4.1 (−9.9 to 1.7), weight 11Berg 2019 (n=120): −4.1 (−9.9 to 1.7), weight 11−4.1 (−9.9 to 1.7)Berg 2019 (n=120)Chen 2020 (n=410): −2.8 (−5.4 to −0.2), weight 41Chen 2020 (n=410): −2.8 (−5.4 to −0.2), weight 41−2.8 (−5.4 to −0.2)Chen 2020 (n=410)Dubois 2021 (n=95): −1.2 (−6.5 to 4.1), weight 9Dubois 2021 (n=95): −1.2 (−6.5 to 4.1), weight 9−1.2 (−6.5 to 4.1)Dubois 2021 (n=95)Evans 2022 (n=180): −4.5 (−8.6 to −0.4), weight 15Evans 2022 (n=180): −4.5 (−8.6 to −0.4), weight 15−4.5 (−8.6 to −0.4)Evans 2022 (n=180)Overall (random effects): −3.3 (−4.7 to −1.9)−3.3 (−4.7 to −1.9)Overall (random effects)No effect
Effect of the intervention on systolic blood pressureRange chart with 6 categories, each a span from low to high and a central value. Lowest low: −9.9 (Berg 2019 (n=120)). Highest high: 4.1 (Dubois 2021 (n=95)). Overall result, drawn as a diamond: Overall (random effects) (−3.3 (−4.7 to −1.9)). The area of each square follows the weight of its span. Reference lines: No effect at 0.−15−55Difference i…No effect: 0Alvarez 2018 (n=240): −4.5 (−7.8 to −1.2), weight 24Alvarez 2018 (n=240): −4.5 (−7.8 to −1.2), weight 24−4.5 (−7.8 to −1.2)Alvarez 2018 (n=240)Berg 2019 (n=120): −4.1 (−9.9 to 1.7), weight 11Berg 2019 (n=120): −4.1 (−9.9 to 1.7), weight 11−4.1 (−9.9 to 1.7)Berg 2019 (n=120)Chen 2020 (n=410): −2.8 (−5.4 to −0.2), weight 41Chen 2020 (n=410): −2.8 (−5.4 to −0.2), weight 41−2.8 (−5.4 to −0.2)Chen 2020 (n=410)Dubois 2021 (n=95): −1.2 (−6.5 to 4.1), weight 9Dubois 2021 (n=95): −1.2 (−6.5 to 4.1), weight 9−1.2 (−6.5 to 4.1)Dubois 2021 (n=95)Evans 2022 (n=180): −4.5 (−8.6 to −0.4), weight 15Evans 2022 (n=180): −4.5 (−8.6 to −0.4), weight 15−4.5 (−8.6 to −0.4)Evans 2022 (n=180)Overall (random effects): −3.3 (−4.7 to −1.9)−3.3 (−4.7 to −1.9)Overall (random effects)No e…

Source: Illustrative meta-analysis

Show chart data
Data for Effect of the intervention on systolic blood pressure
CategoryLowMidHighWeight
Alvarez 2018 (n=240)−7.8−4.5−1.224
Berg 2019 (n=120)−9.9−4.11.711
Chen 2020 (n=410)−5.4−2.8−0.241
Dubois 2021 (n=95)−6.5−1.24.19
Evans 2022 (n=180)−8.6−4.5−0.415
Overall (random effects) (summary)−4.7−3.3−1.9Missing
  • Forest plot
  • Pool the results of several studies