Table 6.

Comparison of incidences of adverse drug reactions (ADRs) in different groups (all enrolled patients)

Variables	Incidences of ADRs, n (%)	p-value
Age (years)
≤70	247 (1.89)
>70	60 (0.84)	<0.001
Dose (ml)
<50 vs 50–100	38 (1.34) vs 228 (1.62)	0.284
<50 vs >100	38 (1.34) vs 41 (1.24)	0.735
50–100 vs >100	228 (1.62) vs 41 (1.24)	0.118
Status of arterial puncturing
Good vs moderate	81 (0.79) vs 2 (0.28)	0.177
Good vs poor	81 (0.79) vs 0 (0.00)	1.000
Moderate vs poor	2 (0.28) vs 0 (0.00)	1.000
Status of venous puncturing
Good vs moderate	199 (2.54) vs 20 (1.70)	0.084
Good vs poor	199 (2.54) vs 5 (5.81)	0.070
Moderate vs poor	20 (1.70) vs 5 (5.81)	0.023
Pre-heating
Yes	161 (1.84)
No	146 (1.28)	0.001