Williamson 1997.

Methods	RCT Blinding of randomization ‐ yes Blinding of intervention ‐ no Complete follow‐up ‐ yes Blinding of outcome measurement ‐ yes
Participants	30 male NB; FT; >/= 24 hr age; BW 2500‐ 4500g; Apgar > 7
Interventions	lidocaine DPNB (n=20) no treatment control (n=10)
Outcomes	TcPO2, RR, HR, cardiac rhythm, cry time and type
Notes	‐ procedure standardized ‐ fasting at least 2 hr prior ‐ Gomco clamp ‐ adverse effects reported
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Low risk	A ‐ Adequate