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Table 1 Data discrepancies and nonsignificant data spin

From: Identifying spin bias of nonsignificant findings in biomedical studies

Data

Spin Bias: Section and Text

Study

Table 3 differences between TC and ENDS on blood pressure not significant

Discussion “blood pressure are less impacted by…[ENDS] than by TC suggests that they might be less detrimental”

[13]

Figure 7 no significant difference in PCO2 for ENDS with or without nicotine

Discussion “increased PCO2 after vaping without nicotine”

[14]

Table S3 LDL cholesterol changes not significant for ENDS or TC, not significant between study groups

Results “Mean LDL cholesterol levels… according to the RMANCOVA analysis, they were not different between the two study groups”

Discussion “[ENDS] users also appeared to have greater decreases in…LDL cholesterol than [TC] smokers”

[15]

Results cSBP “no significant difference at any time point in the [ENDS] group”

Discussion “We demonstrate acute changes in central blood pressure for a short period of time after vaping a liquid with nicotine”

[16]

Results “lower systolic blood pressure among arms…was not statistically significant”

Results “greater reduction in systolic blood pressure for [ENDS] group than in the TC group”

[17]

Figure 3a differences between interventions are nonsignificant

Results “Statistically significant differences between interventions…Figs. 2b and 3a”

[18]

Table 4 no significant difference in HR minimum between control group and ENDS group.

Results “significant difference between C [control] and [ENDS]… for min[imum] HR”

[19]

  1. Note: the studies used multiple terms for e-cigarettes and tobacco cigarettes. E-cigarettes terms are translated as ENDS (electronic nicotine delivery systems) and tobacco cigarettes as TC.
  2. cSBP – central systolic blood pressure
  3. ENDS – e-cigarettes
  4. HR – heart rate
  5. LDL – low-density lipoprotein
  6. PCO2 – partial pressure of carbon dioxide
  7. RMANCOVA – repeated measures analysis of covariance
  8. TC – tobacco cigarette