求翻译：去除无效样本后，还有18710条记录，其中医疗消费为零的样本为7283个，占38.93%。样本中男性9214人，占49.25%。变量基本统计参见表1和表2。是什么意思？

After removal of invalid samples, as well as 18,710 records, including health care spending is zero for the 7283 sample, accounting for 38.93%. 9214 male sample, accounting for 49.25%. Basic statistical variables see Table 1 and Table 2.

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After removes the invalid sample, but also some 18710 records, in which medical service expends for the zero sample is 7283, accounts for 38.93%.In the sample the masculine 9214 people, account for 49.25%.The variable basic statistics see also table 1 and Table 2.

Removing invalid samples, with 18,710 records, of which samples of medical consumption to zero is 7,283, and 38.93%. Samples of male 9,214 people, 49.25%. Basic statistics variables refer to table 1 and table 2.

Removing invalid samples, with 18,710 records, of which samples of medical consumption to zero is 7,283, and 38.93%. Samples of male 9,214 people, 49.25%. Basic statistics variables refer to table 1 and table 2.