Table 3. Influence of treatment combinations on QoL outcome at 6 and 12 months.

Treatment combinations		Rates of diseased QoL/total patients in each treatment combination
Description	Combination	Rates	%	χ2 test
At 6 months
Chemo	BCT+CT+RT+ET vs BCT+no CT+RT+ET	26/35 vs 18/40	74% vs 45%	P=0.01*
Operation	BCT+CT+RT+ET vs ME+CT+RT+ET	26/35 vs 4/9	74% vs 44%	P=0.09
At 12 months
Chemo	BCT+CT+RT+ET vs BCT+no CT+RT+ET	41/87 vs 16/32	47% vs 50%	P=0.78
Operation	BCT+CT+RT+ET vs ME+CT+RT+ET	41/87 vs 19/25	47% vs 76%	P=0.01*

Abbreviations: BCT=breast conserving therapy; ME=mastectomy; CT=chemotherapy; RT=radiotherapy; ET=endocrine therapy (e.g., Tamoxifen); QoL=quality of life.

Bold letters emphasise subgroups different in treatment.

^*P<0.05.