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Table 4 Meta-regressions of basic characteristics of RCTs and mean difference of angina frequency

From: Potential effectiveness of traditional Chinese medicine for cardiac syndrome X (CSX): a systematic review and meta-analysis

Mean difference Coef. Std.err T P [95% Conf. Interval]
Publication year 8.70691 19.39486 0.45 0.697 −74.74244 92.15626
Sample size .3612435 3.40234 0.11 0.925 −14.27784 15.00033
Medication course .3836948 2.185376 0.18 0.877 −9.019221 9.786611
Type of interventions 67.53072 71.69857 0.94 0.446 −240.9633 376.0248
_cons −17557.2 39125.53 −0.45 0.698 −185900.8 150786.4