Table 2.

Univariate analyses for serum RANKL levels.

characteristics	RANKL (pg/ml), median (interquartile range)		P
Age	r∗: 0.010		.89
Gender (female/male)	22.50 (17.18–28.36)	22.11 (17.24–28.65)	.85
Disease duration	r∗: -0.093		.23
DAS28	r∗: 0.139		.08
RF > 20 IU/ml (yes/no)	22.50 (17.11–28.44)	18.93 (15.75–26.30)	.19
ACPA > 51 U/ml (yes/no)	22.5 (17.47–28.32)	18.68 (12.04–26.34)	.056
AKA (positive/negative)	22.99 (18.04–27.52)	20.62 (15.19–29.08)	.30
CRP (mg/L)	r∗: 0.164		.03
ESR (mm/h)	r∗: 0.132		.09
ETS1 rs73013527C/T
Genotype CC	21.09 (16.89–25.27)
CT	25.05 (18.33–31.50)		.049
TT	24.72 (17.21–27.66)
Dominant model (CT + TT vs. CC)	25.05 (17.51–30.54)	21.09 (16.89–25.27)	.02
Recessive model (TT vs. CC + CT)	24.72 (17.21–27.66)	22.41 (17.07–28.65)	.87

^∗Expressed as correlation coefficient.