The Correlations between Health-Related Quality of Life Changes and Pain and Anxiety in Orthodontic Patients in the Initial Stage of Treatment

Table 2

Comparison of scores of SF-36 domains at baseline and day 30 after initial treatment.

	SF-36 (baseline), SF-36 (30th day)		SF-36 (baseline), SF-36 (30th day)		value	value
	Median	Interquartile range	Mean	SD
PF	0	5	−1.276	9.339	−3.48	<0.01
RP	0	0	−0.045	30.742	−0.26	0.8
BP	0	16	2.695	15.927	−2.71	0.01
GH	−2	15	−4.276	15.583	−4.67	<0.01
VT	0	20	−0.403	15.154	−0.26	0.8
SF	0	24	0.333	15.160	−0.24	0.81
RE	0	33	−3.021	91.667	−1.29	0.2
MH	0	20	−0.955	16.418	−1.48	0.14

Analysis of the 8 domains scores of SF-36 before and after the initial treatment by Wilcoxon signed-rank test.
The differences of domain scores before and after the initial treatment were statistically significant ().
(1) Physical functioning: PF; (2) role limitations due to physical problems: RP; (3) body pain: BP; (4) social functioning: SF; (5) general mental health: MH; (6) role limitations because of emotional problems: RE; (7) vitality: VT; and (8) general health perceptions: GH.