Skip to main content

Table 1 Results of risk of bias assessment using the adjusted QUIPS-tool

From: Inflammatory biomarkers in patients with sciatica: a systematic review

Cross sectional studies
  Participation Attrition Prognostic Factor Outcome Risk of bias:
+ = high
+/− = moderate
- = low
Piperno 1997 [16] Moderate Moderate Low Moderate +/−
Brisby [17] High Low Low Moderate +/−
Sugimori [18] High Low Moderate Low +/−
Cheng [19] Moderate Low Low Moderate +/−
Xue [20] Moderate Low Low Moderate +/−
Peng [21] Moderate Low Moderate Low
Palada [22] Low Low Low Low
Longitudinal studies
Schistadt [15] Low Moderate Low Low
Stürmer [23] Low Moderate Low Low
Andrade [24] High Low Low Moderate +/−
Andrade [25] High Low Low Moderate +/−
Pedersen [26] Low High Low Moderate +/−
Wang [27] Low Low Low Moderate
Moen [28] Low Moderate Low Low
Zu [29] Low Moderate Low Low
Chen [30] Moderate Moderate Low Moderate +/−