Pre/Post Intervention Survey
This pre/post intervention survey is designed for researchers and program evaluators who need to measure change before and after an intervention. It uses matched Likert-scale questions across key dimensions, allowing for paired statistical analysis. The form captures baseline measurements, tracks intervention details, and collects post-intervention data with identical measures to enable valid comparison and effect size calculation.
Try the Form
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
export function prePostIntervention(form: FormTs) {
// Pre/Post Intervention Survey - Research Assessment
// Demonstrates: Multi-page, MatrixQuestion with Likert scales, computed change scores, RatingScale
// ============================================
// STATE - Track pre/post scores for comparison
// ============================================
const preScores = form.state<Record<string, number>>({});
const postScores = form.state<Record<string, number>>({});
const studyPhase = form.state<'pre' | 'post' | 'complete'>('pre');
// ============================================
// HEADER
// ============================================
form.addRow(row => {
row.addTextPanel('header', {
label: 'Pre/Post Intervention Survey',
computedValue: () => 'Measuring outcomes before and after intervention',
customStyles: {
backgroundColor: '#0891b2',
color: 'white',
padding: '24px',
borderRadius: '12px',
textAlign: 'center'
}
});
});
// ============================================
// MULTI-PAGE STRUCTURE
// ============================================
const pages = form.addPages('surveyPages');
// ============================================
// PAGE 1: Participant Information
// ============================================
const page1 = pages.addPage('participantInfo');
page1.addRow(row => {
row.addTextPanel('page1Title', {
label: 'Step 1 of 4: Participant Information',
customStyles: {
backgroundColor: '#cffafe',
color: '#0891b2',
padding: '12px 16px',
borderRadius: '8px',
fontWeight: 'bold'
}
});
});
const participantSection = page1.addSubform('participant', {
title: 'Study Information'
});
participantSection.addRow(row => {
row.addTextbox('participantId', {
label: 'Participant ID',
placeholder: 'e.g., P-001',
isRequired: true
}, '1fr');
row.addTextbox('studyId', {
label: 'Study/Program ID',
placeholder: 'e.g., STUDY-2024-01'
}, '1fr');
});
participantSection.addRow(row => {
row.addDropdown('interventionType', {
label: 'Intervention Type',
options: [
{ id: 'training', name: 'Training Program' },
{ id: 'therapy', name: 'Therapy/Counseling' },
{ id: 'education', name: 'Educational Program' },
{ id: 'wellness', name: 'Wellness Intervention' },
{ id: 'behavioral', name: 'Behavioral Intervention' },
{ id: 'coaching', name: 'Coaching/Mentoring' },
{ id: 'other', name: 'Other Intervention' }
],
isRequired: true
}, '1fr');
row.addInteger('duration', {
label: 'Intervention Duration (weeks)',
min: 1,
max: 52,
placeholder: 'Number of weeks'
}, '1fr');
});
participantSection.addRow(row => {
row.addDatepicker('startDate', {
label: 'Intervention Start Date'
}, '1fr');
row.addDatepicker('assessmentDate', {
label: 'Assessment Date',
defaultValue: new Date().toISOString().slice(0, 10),
isRequired: true
}, '1fr');
});
const demographicsSection = page1.addSubform('demographics', {
title: 'Demographics (Optional)'
});
demographicsSection.addRow(row => {
row.addDropdown('ageGroup', {
label: 'Age Group',
options: [
{ id: '18-24', name: '18-24' },
{ id: '25-34', name: '25-34' },
{ id: '35-44', name: '35-44' },
{ id: '45-54', name: '45-54' },
{ id: '55-64', name: '55-64' },
{ id: '65+', name: '65+' },
{ id: 'prefer-not', name: 'Prefer not to say' }
]
}, '1fr');
row.addDropdown('gender', {
label: 'Gender',
options: [
{ id: 'male', name: 'Male' },
{ id: 'female', name: 'Female' },
{ id: 'non-binary', name: 'Non-binary' },
{ id: 'other', name: 'Other' },
{ id: 'prefer-not', name: 'Prefer not to say' }
]
}, '1fr');
});
page1.addSpacer();
page1.addRow(row => {
row.addButton('nextToPage2', {
label: 'Next: Pre-Intervention Assessment',
onClick: () => pages.goToPage('preAssessment')
});
});
// ============================================
// PAGE 2: Pre-Intervention Assessment
// ============================================
const page2 = pages.addPage('preAssessment');
page2.addRow(row => {
row.addTextPanel('page2Title', {
label: 'Step 2 of 4: Pre-Intervention Assessment',
customStyles: {
backgroundColor: '#cffafe',
color: '#0891b2',
padding: '12px 16px',
borderRadius: '8px',
fontWeight: 'bold'
}
});
});
page2.addRow(row => {
row.addTextPanel('preInstructions', {
computedValue: () => 'Please rate how you feel RIGHT NOW, BEFORE starting the intervention. Be honest - there are no right or wrong answers.',
customStyles: {
backgroundColor: '#fef3c7',
padding: '12px 16px',
borderRadius: '8px',
fontStyle: 'italic',
color: '#92400e'
}
});
});
const preWellbeing = page2.addSubform('preWellbeing', {
title: 'Wellbeing & Satisfaction',
customStyles: { backgroundColor: '#f0fdfa', padding: '16px', borderRadius: '8px' }
});
preWellbeing.addRow(row => {
row.addMatrixQuestion('preWellbeingMatrix', {
label: 'Rate your current state on each dimension:',
rows: [
{ id: 'lifeSatisfaction', label: 'Overall life satisfaction', isRequired: true },
{ id: 'happiness', label: 'General happiness', isRequired: true },
{ id: 'stress', label: 'Stress level (1=very high, 5=very low)', isRequired: true },
{ id: 'energy', label: 'Energy and vitality', isRequired: true },
{ id: 'sleep', label: 'Sleep quality', isRequired: true }
],
columns: [
{ id: '1', label: '1' },
{ id: '2', label: '2' },
{ id: '3', label: '3' },
{ id: '4', label: '4' },
{ id: '5', label: '5' }
],
fullWidth: true,
onValueChange: (value) => {
if (!value) return;
const scores: Record<string, number> = {};
Object.entries(value).forEach(([key, val]) => {
if (val) scores[key] = parseInt(val as string, 10);
});
preScores.update(current => ({ ...current, ...scores }));
}
});
});
const preSkills = page2.addSubform('preSkills', {
title: 'Skills & Confidence',
customStyles: { backgroundColor: '#f0fdf4', padding: '16px', borderRadius: '8px' }
});
preSkills.addRow(row => {
row.addMatrixQuestion('preSkillsMatrix', {
label: 'Rate your current skills and confidence:',
rows: [
{ id: 'selfEfficacy', label: 'Belief in your ability to succeed', isRequired: true },
{ id: 'problemSolving', label: 'Problem-solving abilities', isRequired: true },
{ id: 'communication', label: 'Communication skills', isRequired: true },
{ id: 'resilience', label: 'Ability to cope with challenges', isRequired: true },
{ id: 'motivation', label: 'Motivation level', isRequired: true }
],
columns: [
{ id: '1', label: '1' },
{ id: '2', label: '2' },
{ id: '3', label: '3' },
{ id: '4', label: '4' },
{ id: '5', label: '5' }
],
fullWidth: true,
onValueChange: (value) => {
if (!value) return;
const scores: Record<string, number> = {};
Object.entries(value).forEach(([key, val]) => {
if (val) scores[key] = parseInt(val as string, 10);
});
preScores.update(current => ({ ...current, ...scores }));
}
});
});
page2.addRow(row => {
row.addRatingScale('preOverall', {
label: 'Overall, how would you rate your current state?',
preset: 'satisfaction',
size: 'lg',
alignment: 'center'
});
});
page2.addSpacer();
page2.addRow(row => {
row.addButton('backToPage1', {
label: 'Back',
onClick: () => pages.goToPage('participantInfo')
}, '100px');
row.addEmpty('1fr');
row.addButton('nextToPage3', {
label: 'Next: Post-Intervention Assessment',
onClick: () => {
studyPhase.set('post');
pages.goToPage('postAssessment');
}
}, 'auto');
});
// ============================================
// PAGE 3: Post-Intervention Assessment
// ============================================
const page3 = pages.addPage('postAssessment');
page3.addRow(row => {
row.addTextPanel('page3Title', {
label: 'Step 3 of 4: Post-Intervention Assessment',
customStyles: {
backgroundColor: '#cffafe',
color: '#0891b2',
padding: '12px 16px',
borderRadius: '8px',
fontWeight: 'bold'
}
});
});
page3.addRow(row => {
row.addTextPanel('postInstructions', {
computedValue: () => 'Please rate how you feel NOW, AFTER completing the intervention. Use the same scale as before to enable comparison.',
customStyles: {
backgroundColor: '#d1fae5',
padding: '12px 16px',
borderRadius: '8px',
fontStyle: 'italic',
color: '#065f46'
}
});
});
const postWellbeing = page3.addSubform('postWellbeing', {
title: 'Wellbeing & Satisfaction (Post)',
customStyles: { backgroundColor: '#f0fdfa', padding: '16px', borderRadius: '8px' }
});
postWellbeing.addRow(row => {
row.addMatrixQuestion('postWellbeingMatrix', {
label: 'Rate your current state on each dimension:',
rows: [
{ id: 'lifeSatisfaction', label: 'Overall life satisfaction', isRequired: true },
{ id: 'happiness', label: 'General happiness', isRequired: true },
{ id: 'stress', label: 'Stress level (1=very high, 5=very low)', isRequired: true },
{ id: 'energy', label: 'Energy and vitality', isRequired: true },
{ id: 'sleep', label: 'Sleep quality', isRequired: true }
],
columns: [
{ id: '1', label: '1' },
{ id: '2', label: '2' },
{ id: '3', label: '3' },
{ id: '4', label: '4' },
{ id: '5', label: '5' }
],
fullWidth: true,
onValueChange: (value) => {
if (!value) return;
const scores: Record<string, number> = {};
Object.entries(value).forEach(([key, val]) => {
if (val) scores[key] = parseInt(val as string, 10);
});
postScores.update(current => ({ ...current, ...scores }));
}
});
});
const postSkills = page3.addSubform('postSkills', {
title: 'Skills & Confidence (Post)',
customStyles: { backgroundColor: '#f0fdf4', padding: '16px', borderRadius: '8px' }
});
postSkills.addRow(row => {
row.addMatrixQuestion('postSkillsMatrix', {
label: 'Rate your current skills and confidence:',
rows: [
{ id: 'selfEfficacy', label: 'Belief in your ability to succeed', isRequired: true },
{ id: 'problemSolving', label: 'Problem-solving abilities', isRequired: true },
{ id: 'communication', label: 'Communication skills', isRequired: true },
{ id: 'resilience', label: 'Ability to cope with challenges', isRequired: true },
{ id: 'motivation', label: 'Motivation level', isRequired: true }
],
columns: [
{ id: '1', label: '1' },
{ id: '2', label: '2' },
{ id: '3', label: '3' },
{ id: '4', label: '4' },
{ id: '5', label: '5' }
],
fullWidth: true,
onValueChange: (value) => {
if (!value) return;
const scores: Record<string, number> = {};
Object.entries(value).forEach(([key, val]) => {
if (val) scores[key] = parseInt(val as string, 10);
});
postScores.update(current => ({ ...current, ...scores }));
}
});
});
page3.addRow(row => {
row.addRatingScale('postOverall', {
label: 'Overall, how would you rate your current state?',
preset: 'satisfaction',
size: 'lg',
alignment: 'center'
});
});
page3.addSpacer();
page3.addRow(row => {
row.addButton('backToPage2', {
label: 'Back',
onClick: () => pages.goToPage('preAssessment')
}, '100px');
row.addEmpty('1fr');
row.addButton('nextToPage4', {
label: 'Next: Results & Feedback',
onClick: () => {
studyPhase.set('complete');
pages.goToPage('results');
}
}, 'auto');
});
// ============================================
// PAGE 4: Results & Qualitative Feedback
// ============================================
const page4 = pages.addPage('results');
page4.addRow(row => {
row.addTextPanel('page4Title', {
label: 'Step 4 of 4: Results & Feedback',
customStyles: {
backgroundColor: '#cffafe',
color: '#0891b2',
padding: '12px 16px',
borderRadius: '8px',
fontWeight: 'bold'
}
});
});
const resultsSection = page4.addSubform('resultsSection', {
title: 'Change Summary'
});
resultsSection.addRow(row => {
row.addTextPanel('changeSummary', {
computedValue: () => {
const pre = preScores();
const post = postScores();
if (Object.keys(pre).length === 0 || Object.keys(post).length === 0) {
return 'Complete both pre and post assessments to see your change summary.';
}
const dimensions = [
{ key: 'lifeSatisfaction', label: 'Life Satisfaction' },
{ key: 'happiness', label: 'Happiness' },
{ key: 'stress', label: 'Stress (lower is better)' },
{ key: 'energy', label: 'Energy' },
{ key: 'sleep', label: 'Sleep Quality' },
{ key: 'selfEfficacy', label: 'Self-Efficacy' },
{ key: 'problemSolving', label: 'Problem Solving' },
{ key: 'communication', label: 'Communication' },
{ key: 'resilience', label: 'Resilience' },
{ key: 'motivation', label: 'Motivation' }
];
let summary = 'PRE/POST COMPARISON\n';
summary += ''.repeat(40) + '\n\n';
summary += 'Dimension Pre Post Change\n';
summary += ''.repeat(40) + '\n';
let totalChange = 0;
let count = 0;
dimensions.forEach(dim => {
const preVal = pre[dim.key];
const postVal = post[dim.key];
if (preVal !== undefined && postVal !== undefined) {
const change = postVal - preVal;
totalChange += change;
count++;
const changeStr = change > 0 ? `+${change}` : `${change}`;
const emoji = change > 0 ? '' : change < 0 ? '' : '';
summary += `${dim.label.padEnd(22)} ${preVal} ${postVal} ${changeStr} ${emoji}\n`;
}
});
if (count > 0) {
const avgChange = (totalChange / count).toFixed(2);
summary += '\n' + ''.repeat(40) + '\n';
summary += `Average Change: ${parseFloat(avgChange) >= 0 ? '+' : ''}${avgChange} points\n`;
if (parseFloat(avgChange) > 0.5) {
summary += '\n Overall Improvement Detected';
} else if (parseFloat(avgChange) < -0.5) {
summary += '\n Decline Detected - Review Recommended';
} else {
summary += '\n Stable - Minimal Change';
}
}
return summary;
},
customStyles: () => {
const pre = preScores();
const post = postScores();
let totalChange = 0;
let count = 0;
Object.keys(pre).forEach(key => {
const postVal = post[key];
const preVal = pre[key];
if (postVal !== undefined && preVal !== undefined) {
totalChange += postVal - preVal;
count++;
}
});
const avgChange = count > 0 ? totalChange / count : 0;
const baseStyles = {
padding: '20px',
borderRadius: '8px',
whiteSpace: 'pre-wrap',
fontFamily: 'monospace',
fontSize: '13px'
};
if (avgChange > 0.5) {
return { ...baseStyles, backgroundColor: '#d1fae5', borderLeft: '4px solid #059669' };
} else if (avgChange < -0.5) {
return { ...baseStyles, backgroundColor: '#fee2e2', borderLeft: '4px solid #dc2626' };
}
return { ...baseStyles, backgroundColor: '#f3f4f6', borderLeft: '4px solid #6b7280' };
}
});
});
const feedbackSection = page4.addSubform('feedback', {
title: 'Qualitative Feedback'
});
feedbackSection.addRow(row => {
row.addEmojiRating('overallExperience', {
label: 'How would you rate your overall intervention experience?',
preset: 'satisfaction',
size: 'lg',
showLabels: true,
alignment: 'center'
});
});
feedbackSection.addRow(row => {
row.addRatingScale('recommendLikelihood', {
label: 'How likely are you to recommend this intervention to others?',
preset: 'nps',
showCategoryLabel: true,
showSegmentColors: true
});
});
feedbackSection.addSpacer();
feedbackSection.addRow(row => {
row.addTextarea('mostHelpful', {
label: 'What was most helpful about this intervention?',
placeholder: 'Describe what worked well for you...',
rows: 3
});
});
feedbackSection.addRow(row => {
row.addTextarea('improvements', {
label: 'What could be improved?',
placeholder: 'Share suggestions for improvement...',
rows: 3
});
});
feedbackSection.addRow(row => {
row.addTextarea('additionalComments', {
label: 'Any additional comments or observations?',
placeholder: 'Share any other thoughts...',
rows: 3
});
});
page4.addSpacer();
page4.addRow(row => {
row.addButton('backToPage3', {
label: 'Back',
onClick: () => pages.goToPage('postAssessment')
}, '100px');
});
// ============================================
// FORM CONFIGURATION
// ============================================
form.configureSubmitButton({
label: 'Submit Survey',
isVisible: () => studyPhase() === 'complete'
});
form.configureCompletionScreen({
type: 'text',
title: 'Survey Completed',
message: 'Thank you for completing the pre/post intervention survey. Your responses will help evaluate the effectiveness of this intervention and contribute to research findings. You may receive follow-up communication regarding the study results.'
});
}
Frequently Asked Questions
What is a pre/post intervention study?
A pre/post study measures the same variables before and after an intervention to assess its effectiveness. By using identical questions at both time points, researchers can calculate the magnitude of change attributable to the intervention.
Why are matched questions important?
Matched questions ensure you're measuring the same construct at both time points. This allows for valid statistical comparisons, paired t-tests, and effect size calculations that demonstrate whether the intervention produced meaningful change.
How long should I wait between pre and post assessments?
This depends on the intervention type. For training programs, immediately after completion is common. For behavioral interventions, 4-8 weeks post-intervention captures sustained change. Some studies include multiple follow-up points.
Can I use this for group interventions?
Yes, this form works for both individual and group interventions. Each participant completes their own pre and post surveys, allowing for both individual change tracking and aggregate analysis.
What if I forget to complete the pre-survey?
Pre-intervention data should ideally be collected before any exposure to the intervention. Retrospective pre-surveys are sometimes used but may be subject to recall bias. Always try to collect baseline data first.