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MyNetDiary Efficacy

As of November 2010, MyNetDiary online dieting service had more than 800,000 registered user accounts. Many people have lost weight, improved their lifestyle and left very positive reviews of MyNetDiary at iTunes App Store, Android Market and BlackBerry App World. The MyNetDiary team had featured some inspiring user stories on the Live Success Stories page. At that point we had enough statistics to evaluate the effectiveness of MyNetDiary service.

User selection criteria

Since MyNetDiary is a self-service program with a core set of features available for free, many users open an account, try some features and then never return. Other users stick to the program, achieve their target weight and then stop using the program. Sometimes, they return after several months in order to lose weight again or to maintain their current weight. Some pregnant women use MyNetDiary to track their weight changes before and after delivery, and bariatric patients have used MyNetDiary before and after surgery.

With so many deviations, it can be difficult to build a realistic statistical portrait of an “average” MyNetDiary user. This is why we had to take into account only the people who really participated in the program. The following user selection criteria were defined by the MyNetDiary team.

Condition 1. Weight loss wanted

Starting weight should be at least 10 lbs more than target weight. This is only a desired loss; actual loss is discussed below. This condition ensures that this user was not planning to gain or maintain weight.

Condition 2. MyNetDiary was used actively

Condition 3. One pound lost

Both actual and active weight loss should be at least 1 lbs for inclusion.

Not being able to lose one pound indicates an anomaly, a significant deviation from the “average” person we are trying to describe statistically. We also want to exclude users whose goal is simply to maintain weight.

The results

The following table contains average weight loss stats for users who met selection criteria:

Users	Actual average weight loss			Active average weight loss
4047	27 lb	12%	221 days	17 lb	8 %	85 days

 

The following table provides average weight loss stats for different user types and gender:

User Type	Gender	Users	Actual Lb	Actual Pct	Actual Days	Active Lb	Active Pct	Active Days
Free	female	886	27	14	143	16	8	81
Free	male	625	26	11	119	17	7	79
Maximum	female	250	32 lb	15%	251 days	19	9	115
Maximum	male	353	30 lb	12%	211 days	18	7	115
Pro	female	900	27	13	131	16	8	80
Pro	male	1033	27	11	425	17	7	78

Appendix A: Weight chart examples

Live examples of user weight charts can also be found at Live Success Stories page

Example1:

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Example8:

Example9:

 

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