243 lines
7.1 KiB
JavaScript
243 lines
7.1 KiB
JavaScript
const app = getApp();
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Page({
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data: {
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// 基础数据
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ba: '', // 骨龄
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ca: '', // 实际年龄
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igf1: '', // IGF-1值
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igfbp3: '', // IGFBP-3值
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// 计算结果
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showResult: false,
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probability: null,
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calculationDetails: null,
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// 参考范围
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referenceRanges: {
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igf1: {
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male: [
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{ ageRange: '0-1', min: 55, max: 327 },
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{ ageRange: '1-3', min: 51, max: 303 },
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{ ageRange: '3-5', min: 49, max: 289 },
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{ ageRange: '5-7', min: 52, max: 297 },
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{ ageRange: '7-9', min: 57, max: 316 },
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{ ageRange: '9-11', min: 88, max: 474 },
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{ ageRange: '11-13', min: 110, max: 565 },
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{ ageRange: '13-15', min: 202, max: 957 },
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{ ageRange: '15-17', min: 193, max: 731 }
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],
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female: [
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{ ageRange: '0-1', min: 55, max: 327 },
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{ ageRange: '1-3', min: 51, max: 303 },
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{ ageRange: '3-5', min: 49, max: 289 },
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{ ageRange: '5-7', min: 52, max: 297 },
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{ ageRange: '7-9', min: 57, max: 316 },
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{ ageRange: '9-11', min: 88, max: 474 },
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{ ageRange: '11-13', min: 183, max: 850 },
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{ ageRange: '13-15', min: 261, max: 1096 },
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{ ageRange: '15-17', min: 238, max: 996 }
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]
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},
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igfbp3: {
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male: [
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{ ageRange: '0-1', min: 0.7, max: 3.6 },
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{ ageRange: '1-3', min: 0.8, max: 3.9 },
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{ ageRange: '3-5', min: 0.9, max: 4.3 },
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{ ageRange: '5-7', min: 1.0, max: 4.7 },
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{ ageRange: '7-9', min: 1.1, max: 5.2 },
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{ ageRange: '9-11', min: 1.3, max: 5.6 },
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{ ageRange: '11-13', min: 1.4, max: 6.1 },
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{ ageRange: '13-15', min: 1.6, max: 6.8 },
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{ ageRange: '15-17', min: 1.8, max: 7.1 }
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],
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female: [
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{ ageRange: '0-1', min: 0.7, max: 3.6 },
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{ ageRange: '1-3', min: 0.8, max: 3.9 },
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{ ageRange: '3-5', min: 0.9, max: 4.3 },
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{ ageRange: '5-7', min: 1.0, max: 4.7 },
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{ ageRange: '7-9', min: 1.1, max: 5.2 },
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{ ageRange: '9-11', min: 1.3, max: 5.6 },
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{ ageRange: '11-13', min: 1.5, max: 6.3 },
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{ ageRange: '13-15', min: 1.7, max: 7.3 },
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{ ageRange: '15-17', min: 1.9, max: 7.9 }
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]
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}
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}
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},
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// 输入处理
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inputBA(e) {
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// 只允许输入数字和小数点
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const value = e.detail.value.replace(/[^\d.]/g, '');
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// 确保只有一个小数点
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const formattedValue = value.replace(/\.+/g, '.');
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this.setData({ ba: formattedValue });
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},
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inputCA(e) {
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const value = e.detail.value.replace(/[^\d.]/g, '');
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const formattedValue = value.replace(/\.+/g, '.');
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this.setData({ ca: formattedValue });
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},
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inputIGF1(e) {
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const value = e.detail.value.replace(/[^\d.]/g, '');
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const formattedValue = value.replace(/\.+/g, '.');
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this.setData({ igf1: formattedValue });
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},
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inputIGFBP3(e) {
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const value = e.detail.value.replace(/[^\d.]/g, '');
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const formattedValue = value.replace(/\.+/g, '.');
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this.setData({ igfbp3: formattedValue });
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},
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// 计算GHD概率
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calculate() {
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const { ba, ca, igf1, igfbp3 } = this.data;
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// 输入验证
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if (!this.validateInput()) return;
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try {
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// 将字符串转换为数字
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const baNum = parseFloat(ba);
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const caNum = parseFloat(ca);
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const igf1Num = parseFloat(igf1);
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const igfbp3Num = parseFloat(igfbp3);
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// 计算 BA-CA
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const baCaDiff = baNum - caNum;
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// 计算 Y = LN(P/1-P)
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const y = this.calculateY(baCaDiff, igf1Num, igfbp3Num);
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// 计算概率 P
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const p = this.calculateProbability(y);
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// 计算各因素的贡献
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const contributions = this.calculateContributions(baCaDiff, igf1Num, igfbp3Num);
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// 显示结果
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this.setData({
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showResult: true,
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probability: p,
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calculationDetails: {
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steps: [
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`步骤1：设置方程右边为 Y`,
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`Y = 3.726 - 0.876×(BA-CA) - 0.058×(IGF-1) + 0.229×(IGFBP-3)`,
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`Y = 3.726 - 0.876×(${baNum.toFixed(2)} - ${caNum.toFixed(2)}) - 0.058×${igf1Num.toFixed(2)} + 0.229×${igfbp3Num.toFixed(2)}`,
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`Y = 3.726 - 0.876×(${baCaDiff.toFixed(2)}) - 0.058×${igf1Num.toFixed(2)} + 0.229×${igfbp3Num.toFixed(2)}`,
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`Y = 3.726 - ${(0.876 * baCaDiff).toFixed(4)} - ${(0.058 * igf1Num).toFixed(4)} + ${(0.229 * igfbp3Num).toFixed(4)}`,
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`Y = ${y.toFixed(4)}`,
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``,
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`步骤2：解指数方程`,
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`P/(1-P) = e^Y`,
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`P/(1-P) = e^${y.toFixed(4)}`,
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`P/(1-P) = ${Math.exp(y).toFixed(4)}`,
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``,
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`步骤3：求概率 P`,
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`P = e^Y / (1 + e^Y)`,
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`P = ${p.toFixed(4)}`,
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``,
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`GHD预测概率：${(p * 100).toFixed(2)}%`
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].join('\n'),
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interpretation: this.getInterpretation(p)
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}
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});
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} catch (error) {
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wx.showToast({
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title: error.message || '计算失败',
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icon: 'none'
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});
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}
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},
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// 输入验证
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validateInput() {
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const { ba, ca, igf1, igfbp3 } = this.data;
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if (!ba || !ca || !igf1 || !igfbp3) {
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wx.showToast({
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title: '请填写完整信息',
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icon: 'none'
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});
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return false;
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}
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// 验证输入是否为有效数字
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const baNum = parseFloat(ba);
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const caNum = parseFloat(ca);
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const igf1Num = parseFloat(igf1);
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const igfbp3Num = parseFloat(igfbp3);
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if (isNaN(baNum) || isNaN(caNum) || isNaN(igf1Num) || isNaN(igfbp3Num)) {
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wx.showToast({
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title: '请输入有效数字',
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icon: 'none'
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});
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return false;
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}
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// 验证数值范围
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if (baNum <= 0 || caNum <= 0) {
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wx.showToast({
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title: '年龄必须大于0',
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icon: 'none'
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});
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return false;
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}
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return true;
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},
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// 计算Y值
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calculateY(baCaDiff, igf1, igfbp3) {
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return 3.726 - 0.876 * baCaDiff - 0.058 * igf1 + 0.229 * igfbp3;
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},
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// 计算概率
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calculateProbability(y) {
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const expY = Math.exp(y);
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return expY / (1 + expY);
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},
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// 计算各因素的贡献
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calculateContributions(baCaDiff, igf1, igfbp3) {
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// Implementation of calculateContributions method
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},
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// 获取解释文本
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getInterpretation(p) {
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const percentage = (p * 100).toFixed(2);
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let interpretation = `预测结果显示该患者患有GHD的概率为${percentage}%\n\n`;
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if (p >= 0.8) {
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interpretation += '预测结果提示GHD可能性较大，建议进一步进行相关检查。';
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} else if (p >= 0.5) {
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interpretation += '预测结果提示存在GHD可能，建议进行相关检查。';
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} else {
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interpretation += '预测结果提示GHD可能性较小，但仍需结合临床表现进行综合判断。';
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}
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return interpretation;
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},
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// 重置表单
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reset() {
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this.setData({
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ba: '',
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ca: '',
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igf1: '',
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igfbp3: '',
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showResult: false,
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probability: null,
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calculationDetails: null
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});
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},
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// 返回上一页
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onClickLeft() {
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wx.navigateBack();
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}
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});
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