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Table 2 Publications per chronic disease between 1970 -2014

From: Chronic rhinosinusitis: an under-researched epidemic

Chronic disease Crude number of publications RCTs (% of total publications) SRs (% of total publications) MAs (% of total publications) EEs (% of total publications)
CRS 7,962 296 (3.7%) 227 (2.9%) 42 (0.5%) 8 (0.1%)
Asthma 136,652 8,192 (6.0%) 3,370 (2.5%) 746 (0.5%) 299 (0.2%)
DM 337,411 13,633 (4.0%) 7,177 (2.1%) 2,068 (0.6%) 685 (0.2%)
p-value   χ2 = 862.4; p < 0.001 χ2 = 65.2; p < 0.001 χ2 = 8.0; p = 0.018 χ2 = 5.6; p = 0.062
  1. CRS, chronic rhinosinusitis; RCTs, randomized controlled trials; SRs, systematic reviews; MAs, meta-analyses; EE, economic evaluations.