group Acceptance rate n (%) Acceptance rate n (%) Acceptance rate n (%) Effectiveness rate n (%) Effectiveness rate n (%) Effectiveness rate n (%) Effectiveness rate n (%)
Accepted Rejected Total Effective Ineffective Ineffective Total
pre-intervention group 90(95.7) 4(4.3) 94(100) 66(70.2) 28(29.8) 94(100) 94(100)
post-intervention group 434(96.9) 14(3.1) 448(100) 366(81.7) 82(18.3) 448(100) 448(100)
χ2 0.309 6.334
p 0.578 0.012