Comparison of intra-articular injection of parecoxib vs oral administration of celecoxib for the clinical efficacy in the treatment of early knee osteoarthritis

Table 1 Comparison of the baseline information of three groups

Group	Group A	Group B	Group C	F/χ2 value	P value
Case	37	37	36
Gender
Male	17	19	15	0.692	0.707
Female	20	18	21
Age in yr, mean ± SD	52.1 ± 4.7	51.7 ± 3.5	52.1 ± 4.2	0.150	0.86
Kellgren-Lawrence grade
Grade 0	5	8	6	0.91	0.923
Grade I	21	19	19
Grade II	11	10	11
Course of disease (mo)	4.7 ± 1.0	4.8 ± 0.9	4.9 ± 1.0	0.17	0.847
BMI (kg/m2)	24.8 ± 1.2	25.0 ± 1.3	24.9 ± 1.0	0.23	0.796
Occupation
Manual worker	26	27	25	0.121	0.941
Mental worker	11	10	11
Marital status
Married	35	36	35	0.498	0.779
Single	2	1	1
Education Level
Primary	5	4	4	0.41	0.982
Secondary	25	24	24
Higher	7	9	8
Underlying disease
HT/DM/CHD	10/3/2	11/4/3	9/1/1	1.415	0.842

BMI: Body mass index; HT: Hypertension; DM: Diabetes mellitus; CHD: Coronary heart disease.