Table 3.

Univariate linear regressions: predictors of subacute pain intensity and pain unpleasantness.

	b	SE	β	p	BCa 95% CIs		Adj. R2
Predictors of subacute pain intensity
Age	−0.01	0.13	−0.07	P = 0.447	−0.35	0.13	−0.01
Axillary lymph node dissection	−0.64	3.75	−0.17	P = 0.857	−7.51	7.13	−0.01
Lumpectomy vs mastectomy	3.20	2.94	0.11	P = 0.290	−2.17	8.48	0.00
Presurgical chronic pain	3.31	2.84	0.12	P = 0.269	−2.30	9.06	0.00
Pain expectancy	0.75	0.63	0.11	P = 0.238	−0.47	1.83	0.00
Acute pain intensity*	0.22	0.12	0.26	P = 0.058	0.01	0.44	0.06
Optimism	−0.32	0.36	−0.09	P = 0.386	−1.13	0.40	0.00
Pain catastrophizing	0.65	0.43	0.15	P = 0.145	−0.11	1.53	0.01
Anxiety	0.47	0.33	0.14	P = 0.158	−0.17	1.20	0.01
Depression	−0.00	0.39	0.00	P = 0.999	−0.72	0.79	−0.01
Social support	−0.22	0.22	−0.09	P = 0.340	−0.65	0.19	−0.01
Predictors of subacute pain unpleasantness
Age	−0.21	0.17	−0.13	P = 0.234	−0.55	0.08	0.01
Axillary lymph node dissection	4.65	4.65	0.10	P = 0.324	−3.10	11.81	0.00
Lumpectomy vs mastectomy	3.97	3.27	0.11	P = 0.230	−1.96	10.12	0.00
Presurgical chronic pain	2.90	3.31	0.09	P = 0.387	−3.45	9.76	0.00
Pain expectancy	0.96	0.70	0.11	P = 0.177	−0.46	2.24	0.00
Acute pain unpleasantness*	0.16	0.11	0.15	P = 0.159	−0.09	0.39	0.01
Optimism	−0.38	0.43	−0.09	P = 0.376	−1.23	0.46	0.00
Pain catastrophizing	0.65	0.50	0.13	P = 0.194	−0.23	1.61	0.01
Anxiety	0.63	0.41	0.16	P = 0.130	−0.22	1.55	0.01
Depression	0.47	0.44	0.09	P = 0.279	−0.38	1.30	0.00
Social support	−0.09	0.27	−0.03	P = 0.752	−0.59	0.38	−0.01

Statistically significant results at p < 0.05 are written in bold adj. R²: adjusted R², BCa 95% CIs: bias corrected accelerated 95% confidence intervals based on 1000 bootstrap samples.

^*Paired samples t tests showed that the differences in mean pain intensity and unpleasantness from the acute to the subacute phase were statistically significant at p < 0.001.