highly significantp = 0.79
Global Aesthetic Improvement Scale (GAIS) Responder Rate The pooled analysis of three studies demonstrated a highly significant difference in responder rates between the hyaluronic acid (HA) and control groups (RR = 3.27, 95% CI: 2.26–4.75, p = 0.79; I 2 = 95%), while performing subgroup analysis the HA was comparable to other fillers (RR = 1.12, 95% CI: 0.84–1.50, p = 0.43), while the HA was significantly superior to placebo group (RR = 53.62, 95% CI: 7.15–402.01, p = 0.0001).